| lcc_tree |
[{'id': 'S', 'text': 'Agriculture', 'children': [{'id': 'SH1-691', 'text': 'Aquaculture. Fisheries. Angling', 'children': []}, {'id': 'SK1-664', 'text': 'Hunting sports', 'children': []}, {'id': 'SD1-669.5', 'text': 'Forestry', 'children': []}, {'id': 'S1-972', 'text': 'Agriculture (General)', 'children': []}, {'id': 'SB1-1110', 'text': 'Plant culture', 'children': []}, {'id': 'SF1-1100', 'text': 'Animal culture', 'children': [{'id': 'SF191-275', 'text': 'Cattle', 'children': [{'id': 'SF250.5-275', 'text': 'Dairy processing. Dairy products', 'children': []}, {'id': 'SF221-250', 'text': 'Dairying', 'children': []}]}, {'id': 'SF600-1100', 'text': 'Veterinary medicine', 'children': []}]}]}, {'id': 'N', 'text': 'Fine Arts', 'children': [{'id': 'NC1-1940', 'text': 'Drawing. Design. Illustration', 'children': []}, {'id': 'ND25-3416', 'text': 'Painting', 'children': []}, {'id': 'NE1-3002', 'text': 'Print media', 'children': [{'id': 'NE1-978', 'text': 'Printmaking and engraving', 'children': [{'id': 'NE380', 'text': 'Conservation and restoration of prints', 'children': []}]}]}, {'id': 'NX1-820', 'text': 'Arts in general', 'children': [{'id': 'NX440-632', 'text': 'History of the arts', 'children': []}]}, {'id': 'NA1-9428', 'text': 'Architecture', 'children': [{'id': 'NA2695-2793', 'text': 'Architectural drawing and design', 'children': []}, {'id': 'NA9000-9428', 'text': 'Aesthetics of cities. City planning and beautifying', 'children': []}]}, {'id': 'NK1-9990', 'text': 'Decorative arts', 'children': []}, {'id': 'NB1-1952', 'text': 'Sculpture', 'children': []}, {'id': 'N1-9211', 'text': 'Visual arts', 'children': []}]}, {'id': 'L', 'text': 'Education', 'children': [{'id': 'L7-991', 'text': 'Education (General)', 'children': []}, {'id': 'LA5-2396', 'text': 'History of education', 'children': []}, {'id': 'LC8-6691', 'text': 'Special aspects of education', 'children': []}, {'id': 'LB5-3640', 'text': 'Theory and practice of education', 'children': []}]}, {'id': 'T', 'text': 'Technology', 'children': [{'id': 'TC1501-1800', 'text': 'Ocean engineering', 'children': []}, {'id': 'TN1-997', 'text': 'Mining engineering. Metallurgy', 'children': []}, {'id': 'TX1-1110', 'text': 'Home economics', 'children': [{'id': 'TX341-641', 'text': 'Nutrition. Foods and food supply', 'children': []}, {'id': 'TX901-946.5', 'text': 'Hospitality industry. Hotels, clubs, restaurants, etc. Food service', 'children': []}, {'id': 'TX642-840', 'text': 'Cookery', 'children': []}]}, {'id': 'TE1-450', 'text': 'Highway engineering. Roads and pavements', 'children': []}, {'id': 'TK1-9971', 'text': 'Electrical engineering. Electronics. Nuclear engineering', 'children': [{'id': 'TA401-492', 'text': 'Materials of engineering and construction. Mechanics of materials', 'children': []}, {'id': 'TK452-454.4', 'text': 'Electric apparatus and materials. Electric circuits. Electric networks', 'children': []}, {'id': 'TK3001-3521', 'text': 'Distribution or transmission of electric power', 'children': []}, {'id': 'TA365-367', 'text': 'Acoustics in engineering. Acoustical engineering', 'children': []}, {'id': 'TK1001-1841', 'text': 'Production of electric energy or power. Powerplants. Central stations', 'children': []}, {'id': 'TK9001-9401', 'text': 'Nuclear engineering. Atomic power', 'children': []}, {'id': 'TK5101-6720', 'text': 'Telecommunication', 'children': []}, {'id': 'TK4001-4102', 'text': 'Applications of electric power', 'children': []}, {'id': 'TK7800-8360', 'text': 'Electronics', 'children': [{'id': 'TK7885-7895', 'text': 'Computer engineering. Computer hardware', 'children': []}]}]}, {'id': 'TG1-470', 'text': 'Bridge engineering', 'children': []}, {'id': 'TC1-978', 'text': 'Hydraulic engineering', 'children': [{'id': 'TC401-506', 'text': 'River, lake, and water-supply engineering (General)', 'children': []}, {'id': 'TC530-537', 'text': 'River protective works. Regulation. Flood control', 'children': []}, {'id': 'TC601-791', 'text': 'Canals and inland navigation. Waterways', 'children': []}, {'id': 'TC160-181', 'text': 'Technical hydraulics', 'children': []}, {'id': 'TC801-978', 'text': 'Irrigation engineering. Reclamation of wasteland. Drainage', 'children': []}, {'id': 'TC540-558', 'text': 'Dams. Barrages', 'children': []}, {'id': 'TC203-380', 'text': 'Harbors and coast protective works. Coastal engineering. Lighthouses', 'children': []}]}, {'id': 'TF1-1620', 'text': 'Railroad engineering and operation', 'children': []}, {'id': 'TR1-1050', 'text': 'Photography', 'children': []}, {'id': 'TD1-1066', 'text': 'Environmental technology. Sanitary engineering', 'children': [{'id': 'TD201-500', 'text': 'Water supply for domestic and industrial purposes', 'children': []}, {'id': 'TD1020-1066', 'text': 'Hazardous substances and their disposal', 'children': []}, {'id': 'TD783-812.5', 'text': 'Municipal refuse. Solid wastes', 'children': []}, {'id': 'TD172-193.5', 'text': 'Environmental pollution', 'children': []}, {'id': 'TD169-171.8', 'text': 'Environmental protection', 'children': []}, {'id': 'TD194-195', 'text': 'Environmental effects of industries and plants', 'children': []}, {'id': 'TD878-894', 'text': 'Special types of environment', 'children': []}, {'id': 'TD511-780', 'text': 'Sewage collection and disposal systems. Sewerage', 'children': []}, {'id': 'TD920-934', 'text': 'Rural and farm sanitary engineering', 'children': []}]}, {'id': 'TJ1-1570', 'text': 'Mechanical engineering and machinery', 'children': [{'id': 'TJ163.26-163.5', 'text': 'Energy conservation', 'children': []}, {'id': 'TJ807-830', 'text': 'Renewable energy sources', 'children': []}, {'id': 'TJ212-225', 'text': 'Control engineering systems. Automatic machinery (General)', 'children': []}, {'id': 'TJ227-240', 'text': 'Machine design and drawing', 'children': []}]}, {'id': 'TP1-1185', 'text': 'Chemical technology', 'children': [{'id': 'TP1080-1185', 'text': 'Polymers and polymer manufacture', 'children': []}, {'id': 'TP785-869', 'text': 'Clay industries. Ceramics. Glass', 'children': []}, {'id': 'TP875-888', 'text': 'Cement industries', 'children': []}, {'id': 'TP670-699', 'text': 'Oils, fats, and waxes', 'children': [{'id': 'TP690-692.5', 'text': 'Petroleum refining. Petroleum products', 'children': []}]}, {'id': 'TP315-360', 'text': 'Fuel', 'children': []}, {'id': 'TP200-248', 'text': 'Chemicals: Manufacture, use, etc.', 'children': []}, {'id': 'TP890-933', 'text': 'Textile bleaching, dyeing, printing, etc.', 'children': []}, {'id': 'TP155-156', 'text': 'Chemical engineering', 'children': []}, {'id': 'TP700-746', 'text': 'Illuminating industries (Nonelectric)', 'children': []}, {'id': 'TP267.5-301', 'text': 'Explosives and pyrotechnics', 'children': []}, {'id': 'TP480-498', 'text': 'Low temperature engineering. Cryogenic engineering. Refrigeration', 'children': []}, {'id': 'TP248.13-248.65', 'text': 'Biotechnology', 'children': []}, {'id': 'TP250-261', 'text': 'Industrial electrochemistry', 'children': []}, {'id': 'TP751-762', 'text': 'Gas industry', 'children': []}, {'id': 'TP368-456', 'text': 'Food processing and manufacture', 'children': []}, {'id': 'TP934-945', 'text': 'Paints, pigments, varnishes, etc.', 'children': []}, {'id': 'TP500-660', 'text': 'Fermentation industries. Beverages. Alcohol', 'children': []}]}, {'id': 'TA1-2040', 'text': 'Engineering (General). Civil engineering (General)', 'children': [{'id': 'TA174', 'text': 'Engineering design', 'children': []}, {'id': 'TA349-359', 'text': 'Mechanics of engineering. Applied mechanics', 'children': []}, {'id': 'TA213-215', 'text': 'Engineering machinery, tools, and implements', 'children': []}, {'id': 'TA170-171', 'text': 'Environmental engineering', 'children': []}, {'id': 'TA1501-1820', 'text': 'Applied optics. Photonics', 'children': []}, {'id': 'TA1001-1280', 'text': 'Transportation engineering', 'children': []}, {'id': 'TA177.4-185', 'text': 'Engineering economy', 'children': []}, {'id': 'TA630-695', 'text': 'Structural engineering (General)', 'children': []}, {'id': 'TA715-787', 'text': 'Earthwork. Foundations', 'children': []}, {'id': 'TA495', 'text': 'Disasters and engineering', 'children': []}, {'id': 'TA168', 'text': 'Systems engineering', 'children': []}, {'id': 'TA2001-2040', 'text': 'Plasma engineering. Applied plasma dynamics', 'children': []}, {'id': 'TA501-625', 'text': 'Surveying', 'children': []}, {'id': 'TA703-712', 'text': 'Engineering geology. Rock mechanics. Soil mechanics. Underground construction', 'children': []}]}, {'id': 'TL1-4050', 'text': 'Motor vehicles. Aeronautics. Astronautics', 'children': []}, {'id': 'TT1-999', 'text': 'Handicrafts. Arts and crafts', 'children': []}, {'id': 'TH1-9745', 'text': 'Building construction', 'children': [{'id': 'TH845-895', 'text': 'Architectural engineering. Structural engineering of buildings', 'children': []}, {'id': 'TH7005-7699', 'text': 'Heating and ventilation. Air conditioning', 'children': []}, {'id': 'TH2025-3000', 'text': 'Details in building design and construction. Including walls, roofs', 'children': []}, {'id': 'TH1000-1725', 'text': 'Systems of building construction. Including fireproof construction, concrete construction', 'children': []}, {'id': 'TH9025-9745', 'text': 'Protection of buildings. Including protection from dampness, fire, burglary', 'children': []}]}, {'id': 'T1-995', 'text': 'Technology (General)', 'children': [{'id': 'T55.4-60.8', 'text': 'Industrial engineering. Management engineering', 'children': [{'id': 'T57-57.97', 'text': 'Applied mathematics. Quantitative methods', 'children': []}, {'id': 'T58.7-58.8', 'text': 'Production capacity. Manufacturing capacity', 'children': []}, {'id': 'T58.6-58.62', 'text': 'Management information systems', 'children': []}, {'id': 'T59.5', 'text': 'Automation', 'children': []}, {'id': 'T58.5-58.64', 'text': 'Information technology', 'children': []}]}, {'id': 'T351-385', 'text': 'Mechanical drawing. Engineering graphics', 'children': []}, {'id': 'T11.95-12.5', 'text': 'Industrial directories', 'children': [{'id': 'T55-55.3', 'text': 'Industrial safety. Industrial accident prevention', 'children': []}]}]}, {'id': 'TS1-2301', 'text': 'Manufactures', 'children': [{'id': 'TS195-198.8', 'text': 'Packaging', 'children': []}, {'id': 'TS155-194', 'text': 'Production management. Operations management', 'children': []}]}]}, {'id': 'V', 'text': 'Naval Science', 'children': [{'id': 'VM1-989', 'text': 'Naval architecture. Shipbuilding. Marine engineering', 'children': []}]}, {'id': 'A', 'text': 'General Works', 'children': [{'id': 'AG2-600', 'text': 'Dictionaries and other general reference works', 'children': []}, {'id': 'AN', 'text': 'Newspapers', 'children': []}, {'id': 'AE1-90', 'text': 'Encyclopedias', 'children': []}, {'id': 'AZ20-999', 'text': 'History of scholarship and learning. The humanities', 'children': []}, {'id': 'AM1-501', 'text': 'Museums. Collectors and collecting', 'children': []}, {'id': 'AP1-271', 'text': 'Periodicals', 'children': []}, {'id': 'AS1-945', 'text': 'Academies and learned societies', 'children': []}]}, {'id': 'G', 'text': 'Geography. Anthropology. Recreation', 'children': [{'id': 'GN1-890', 'text': 'Anthropology', 'children': [{'id': 'GN301-674', 'text': 'Ethnology. Social and cultural anthropology', 'children': []}, {'id': 'GN49-298', 'text': 'Physical anthropology. Somatology', 'children': [{'id': 'GN281-289', 'text': 'Human evolution', 'children': [{'id': 'GN282-286.7', 'text': 'Fossil man. Human paleontology', 'children': []}]}]}, {'id': 'GN700-890', 'text': 'Prehistoric archaeology', 'children': []}]}, {'id': 'GV1-1860', 'text': 'Recreation. Leisure', 'children': [{'id': 'GV557-1198.995', 'text': 'Sports', 'children': []}, {'id': 'GV1580-1799.4', 'text': 'Dancing', 'children': []}, {'id': 'GV181.35-181.6', 'text': 'Recreation leadership. Administration of recreation services', 'children': []}]}, {'id': 'GF1-900', 'text': 'Human ecology. Anthropogeography', 'children': [{'id': 'GF101-127', 'text': 'Settlements', 'children': [{'id': 'GF125', 'text': 'Cities. Urban geography', 'children': []}]}]}, {'id': 'G3180-9980', 'text': 'Maps', 'children': [{'id': 'G9900-9980', 'text': 'Unlocalized maps (Asian studies only)', 'children': []}]}, {'id': 'GT1-7070', 'text': 'Manners and customs (General)', 'children': []}, {'id': 'GR1-950', 'text': 'Folklore', 'children': []}, {'id': 'GB3-5030', 'text': 'Physical geography', 'children': []}, {'id': 'GE1-350', 'text': 'Environmental sciences', 'children': []}, {'id': 'G1-922', 'text': 'Geography (General)', 'children': []}, {'id': 'GA1-1776', 'text': 'Mathematical geography. Cartography', 'children': [{'id': 'GA51-87', 'text': 'Surveys (General)', 'children': []}, {'id': 'GA101-1776', 'text': 'Cartography', 'children': [{'id': 'GA109.5', 'text': 'Cadastral mapping', 'children': []}]}]}, {'id': 'GC1-1581', 'text': 'Oceanography', 'children': []}]}, {'id': 'C', 'text': 'Auxiliary sciences of history', 'children': [{'id': 'CD1-6471', 'text': 'Diplomatics. Archives. Seals', 'children': []}, {'id': 'CS1-3090', 'text': 'Genealogy', 'children': []}, {'id': 'CT21-9999', 'text': 'Biography', 'children': []}, {'id': 'CC1-960', 'text': 'Archaeology', 'children': []}, {'id': 'CB3-482', 'text': 'History of Civilization', 'children': []}]}, {'id': 'D', 'text': 'History (General) and history of Europe', 'children': [{'id': 'DA1-995', 'text': 'History of Great Britain', 'children': []}, {'id': 'DS1-937', 'text': 'History of Asia', 'children': []}, {'id': 'DE1-100', 'text': 'History of the Greco-Roman World', 'children': []}, {'id': 'DH1-925', 'text': 'History of Low Countries - Benelux Countries', 'children': []}, {'id': 'DAW1001-1051', 'text': 'History of Central Europe', 'children': []}, {'id': 'DP501-900.22', 'text': 'History of Portugal', 'children': []}, {'id': 'DU1-950', 'text': 'History of Oceania (South Seas)', 'children': []}, {'id': 'DP1-402', 'text': 'History of Spain', 'children': []}, {'id': 'DR1-2285', 'text': 'History of Balkan Peninsula', 'children': []}, {'id': 'DK1-4735', 'text': 'History of Russia. Soviet Union. Former Soviet Republics', 'children': []}, {'id': 'DG11-999', 'text': 'History of Italy', 'children': []}, {'id': 'DB1-3150', 'text': 'History of Austria. Liechtenstein. Hungary. Czechoslovakia', 'children': [{'id': 'DB901-999', 'text': 'Hungary', 'children': []}, {'id': 'DB2000-3150', 'text': 'Czechoslovakia', 'children': []}, {'id': 'DB1-879', 'text': 'Austria. Austro-Hungarian Empire', 'children': []}]}, {'id': 'DD1-905', 'text': 'History of Germany', 'children': []}, {'id': 'DK4010-4800', 'text': 'History of Poland', 'children': []}, {'id': 'DL1-1180', 'text': 'History of Northern Europe. Scandinavia', 'children': [{'id': 'DL401-596', 'text': 'Norway', 'children': []}, {'id': 'DL1002-1180', 'text': 'Finland', 'children': []}, {'id': 'DL101-291', 'text': 'Denmark', 'children': []}, {'id': 'DL301-398', 'text': 'Iceland', 'children': []}, {'id': 'DL601-991', 'text': 'Sweden', 'children': []}]}, {'id': 'DT1-3415', 'text': 'History of Africa', 'children': []}, {'id': 'DJ1-500', 'text': 'History of Netherlands (Holland)', 'children': []}, {'id': 'DJK1-77', 'text': 'History of Eastern Europe', 'children': []}, {'id': 'DF10-951', 'text': 'History of Greece', 'children': []}, {'id': 'DQ1-851', 'text': 'History of Switzerland', 'children': []}, {'id': 'DC1-947', 'text': 'History of France', 'children': []}, {'id': 'D1-2009', 'text': 'History (General)', 'children': [{'id': 'D51-90', 'text': 'Ancient history', 'children': []}, {'id': 'D204-475', 'text': 'Modern history, 1453-', 'children': [{'id': 'D299-475', 'text': '1789-', 'children': [{'id': 'D900-2009', 'text': 'Europe (General)', 'children': []}]}]}, {'id': 'D111-203', 'text': 'Medieval history', 'children': []}]}]}, {'id': 'E-F', 'text': 'History America', 'children': [{'id': 'E11-143', 'text': 'America', 'children': []}, {'id': 'E151-889', 'text': 'United States', 'children': []}, {'id': 'F1201-3799', 'text': 'Latin America. Spanish America', 'children': []}, {'id': 'F1-975', 'text': 'United States local history', 'children': []}]}, {'id': 'P', 'text': 'Language and Literature', 'children': [{'id': 'PC1-5498', 'text': 'Romanic languages', 'children': []}, {'id': 'PE1-3729', 'text': 'English language', 'children': []}, {'id': 'PS1-3576', 'text': 'American literature', 'children': []}, {'id': 'P1-1091', 'text': 'Philology. Linguistics', 'children': [{'id': 'P87-96', 'text': 'Communication. Mass media', 'children': [{'id': 'P95-95.6', 'text': 'Oral communication. Speech', 'children': []}]}, {'id': 'P98-98.5', 'text': 'Computational linguistics. Natural language processing', 'children': []}, {'id': 'P101-410', 'text': 'Language. Linguistic theory. Comparative grammar', 'children': [{'id': 'P325-325.5', 'text': 'Semantics', 'children': []}, {'id': 'P301-301.5', 'text': 'Style. Composition. Rhetoric', 'children': []}, {'id': 'P302-302.87', 'text': 'Discourse analysis', 'children': []}, {'id': 'P118-118.7', 'text': 'Language acquisition', 'children': []}, {'id': 'P306-310', 'text': 'Translating and interpreting', 'children': []}, {'id': 'P327-327.5', 'text': 'Lexicography', 'children': []}, {'id': 'P201-299', 'text': 'Comparative grammar', 'children': []}]}]}, {'id': 'PR1-9680', 'text': 'English literature', 'children': []}, {'id': 'PA', 'text': 'Greek language and literature. Latin language and literature', 'children': [{'id': 'PA201-899', 'text': 'Greek philology and language', 'children': []}]}, {'id': 'PH1-5490', 'text': 'Ural-Altaic languages', 'children': [{'id': 'PH101-405', 'text': 'Finnish', 'children': []}, {'id': 'PH91-98.5', 'text': 'Finnic. Baltic-Finnic', 'children': []}, {'id': 'PH501-1109', 'text': 'Other Finnic languages and dialects', 'children': []}]}, {'id': 'PN1-6790', 'text': 'Literature (General)', 'children': [{'id': 'PN1560-1590', 'text': 'The performing arts. Show business', 'children': []}, {'id': 'PN4699-5650', 'text': 'Journalism. The periodical press, etc.', 'children': []}, {'id': 'PN4001-4355', 'text': 'Oratory. Elocution, etc.', 'children': []}, {'id': 'PN1600-3307', 'text': 'Drama', 'children': [{'id': 'PN1993-1999', 'text': 'Motion pictures', 'children': []}, {'id': 'PN2000-3307', 'text': 'Dramatic representation. The theater', 'children': []}]}]}, {'id': 'PL1-8844', 'text': 'Languages and literature of Eastern Asia, Africa, Oceania', 'children': [{'id': 'PL1001-3208', 'text': 'Chinese language and literature', 'children': []}, {'id': 'PL8000-8844', 'text': 'African languages and literature', 'children': []}, {'id': 'PL501-889', 'text': 'Japanese language and literature', 'children': []}]}, {'id': 'PG1-9665', 'text': 'Slavic languages. Baltic languages. Albanian languages', 'children': []}, {'id': 'PT7351-7550', 'text': 'Modern Icelandic literature', 'children': []}, {'id': 'PT1-4897', 'text': 'German literature', 'children': []}, {'id': 'PK1-9601', 'text': 'Indo-Iranian languages and literature', 'children': []}, {'id': 'PT9201-9999', 'text': 'Swedish literature', 'children': []}, {'id': 'PT7601-8260', 'text': 'Danish literature', 'children': []}, {'id': 'PD1-7159', 'text': 'Germanic languages. Scandinavian languages', 'children': [{'id': 'PD1501-7159', 'text': 'North Germanic. Scandinavian', 'children': []}]}, {'id': 'PJ', 'text': 'Oriental languages and literatures', 'children': []}, {'id': 'PQ1-3999', 'text': 'French literature - Italian literature - Spanish literature - Portuguese literature', 'children': []}, {'id': 'PT7101-7338', 'text': 'Old Norse literature: Old Icelandic and Old Norwegian', 'children': []}, {'id': 'PT8301-9155', 'text': 'Norwegian literature', 'children': []}]}, {'id': 'K', 'text': 'Law', 'children': [{'id': 'KBP1-4860', 'text': 'Islamic law', 'children': []}, {'id': 'KL-KWX', 'text': 'Asia and Eurasia, Africa, Pacific Area, and Antarctica', 'children': [{'id': 'KN', 'text': 'South Asia. Southeast Asia. East Asia', 'children': []}]}, {'id': 'KJ-KKZ', 'text': 'Law of Europe', 'children': [{'id': 'KJ2-1040', 'text': 'History of Law', 'children': []}]}, {'id': 'KZ2-6785', 'text': 'Law of nations', 'children': []}, {'id': 'K1-7720', 'text': 'Law in general. Comparative and uniform law. Jurisprudence', 'children': [{'id': 'K201-487', 'text': 'Jurisprudence. Philosophy and theory of law', 'children': []}, {'id': 'K520-5582', 'text': 'Comparative law. International uniform law', 'children': [{'id': 'K5000-5582', 'text': 'Criminal law and procedure', 'children': []}, {'id': 'K3601-3611', 'text': 'Medical legislation', 'children': []}, {'id': 'K1000-1395', 'text': 'Commercial law', 'children': []}, {'id': 'K623-968', 'text': 'Civil law', 'children': [{'id': 'K720-792', 'text': 'Property', 'children': []}]}, {'id': 'K3840-4375', 'text': 'Regulation of industry, trade, and commerce. Occupational law', 'children': [{'id': 'K4011-4343', 'text': 'Transportation and communication', 'children': []}]}, {'id': 'K3581-3598', 'text': 'Environmental law', 'children': []}, {'id': 'K3150', 'text': 'Public law', 'children': []}, {'id': 'K4430-4675', 'text': 'Public finance', 'children': [{'id': 'HJ2240-5908', 'text': 'Revenue. Taxation. Internal revenue', 'children': [{'id': 'HJ4113-4601', 'text': 'Property tax', 'children': []}]}]}]}, {'id': 'K7000-7720', 'text': 'Private international law. Conflict of laws', 'children': [{'id': 'K7585-7595', 'text': 'Social legislation', 'children': []}]}]}]}, {'id': 'Z', 'text': 'Bibliography. Library science. Information resources', 'children': [{'id': 'Z1001-8999', 'text': 'Bibliography', 'children': [{'id': 'Z1001-1121', 'text': 'General bibliography', 'children': []}]}, {'id': 'ZA3040-5185', 'text': 'Information resources (General)', 'children': []}]}, {'id': 'R', 'text': 'Medicine', 'children': [{'id': 'RT1-120', 'text': 'Nursing', 'children': []}, {'id': 'RL1-803', 'text': 'Dermatology', 'children': []}, {'id': 'RJ1-570', 'text': 'Pediatrics', 'children': []}, {'id': 'RE1-994', 'text': 'Ophthalmology', 'children': []}, {'id': 'RK1-715', 'text': 'Dentistry', 'children': []}, {'id': 'R5-920', 'text': 'Medicine (General)', 'children': [{'id': 'R131-687', 'text': 'History of medicine. Medical expeditions', 'children': []}, {'id': 'R858-859.7', 'text': 'Computer applications to medicine. Medical informatics', 'children': []}, {'id': 'R895-920', 'text': 'Medical physics. Medical radiology. Nuclear medicine', 'children': []}, {'id': 'R5-130.5', 'text': 'General works', 'children': []}, {'id': 'R855-855.5', 'text': 'Medical technology', 'children': []}, {'id': 'R723-726', 'text': 'Medical philosophy. Medical ethics', 'children': []}]}, {'id': 'RZ201-999', 'text': 'Other systems of medicine', 'children': [{'id': 'RZ301-397.5', 'text': 'Osteopathy', 'children': []}, {'id': 'RZ399', 'text': 'Osteo-magnetics, neuropathy, etc.', 'children': []}, {'id': 'RZ201-275', 'text': 'Chiropractic', 'children': []}, {'id': 'RZ400-408', 'text': 'Mental healing', 'children': []}, {'id': 'RZ409.7-999', 'text': 'Miscellaneous systems and treatments', 'children': []}]}, {'id': 'RF1-547', 'text': 'Otorhinolaryngology', 'children': []}, {'id': 'RD1-811', 'text': 'Surgery', 'children': [{'id': 'RD701-811', 'text': 'Orthopedic surgery', 'children': []}, {'id': 'RD78.3-87.3', 'text': 'Anesthesiology', 'children': []}]}, {'id': 'RX1-681', 'text': 'Homeopathy', 'children': []}, {'id': 'RM1-950', 'text': 'Therapeutics. Pharmacology', 'children': []}, {'id': 'RS1-441', 'text': 'Pharmacy and materia medica', 'children': []}, {'id': 'RB1-214', 'text': 'Pathology', 'children': []}, {'id': 'RG1-991', 'text': 'Gynecology and obstetrics', 'children': []}, {'id': 'RC31-1245', 'text': 'Internal medicine', 'children': [{'id': 'RC581-951', 'text': 'Specialties of internal medicine', 'children': [{'id': 'RC633-647.5', 'text': 'Diseases of the blood and blood-forming organs', 'children': []}, {'id': 'RC666-701', 'text': 'Diseases of the circulatory (Cardiovascular) system', 'children': []}, {'id': 'RC620-627', 'text': 'Nutritional diseases. Deficiency diseases', 'children': []}, {'id': 'RC705-779', 'text': 'Diseases of the respiratory system', 'children': []}, {'id': 'RC925-935', 'text': 'Diseases of the musculoskeletal system', 'children': []}, {'id': 'RC581-607', 'text': 'Immunologic diseases. Allergy', 'children': []}, {'id': 'RC648-665', 'text': 'Diseases of the endocrine glands. Clinical endocrinology', 'children': []}, {'id': 'RC870-923', 'text': 'Diseases of the genitourinary system. Urology', 'children': []}, {'id': 'RC799-869', 'text': 'Diseases of the digestive system. Gastroenterology', 'children': []}]}, {'id': 'RC321-571', 'text': 'Neurosciences. Biological psychiatry. Neuropsychiatry', 'children': [{'id': 'RC346-429', 'text': 'Neurology. Diseases of the nervous system', 'children': [{'id': 'RC435-571', 'text': 'Psychiatry', 'children': [{'id': 'RC475-489', 'text': 'Therapeutics. Psychotherapy', 'children': []}]}]}]}, {'id': 'RC254-282', 'text': 'Neoplasms. Tumors. Oncology. Including cancer and carcinogens', 'children': []}, {'id': 'RC952-1245', 'text': 'Special situations and conditions', 'children': [{'id': 'RC963-969', 'text': 'Industrial medicine. Industrial hygiene', 'children': []}, {'id': 'RC952-954.6', 'text': 'Geriatrics', 'children': []}, {'id': 'RC955-962', 'text': 'Arctic medicine. Tropical medicine', 'children': []}, {'id': 'RC1200-1245', 'text': 'Sports medicine', 'children': []}]}, {'id': 'RC109-216', 'text': 'Infectious and parasitic diseases', 'children': []}, {'id': 'RC86-88.9', 'text': 'Medical emergencies. Critical care. Intensive care. First aid', 'children': []}]}, {'id': 'RA1-1270', 'text': 'Public aspects of medicine', 'children': [{'id': 'RA1190-1270', 'text': 'Toxicology. Poisons', 'children': []}]}]}, {'id': 'M', 'text': 'Music and books on Music', 'children': [{'id': 'MT1-960', 'text': 'Musical instruction and study', 'children': []}, {'id': 'ML1-3930', 'text': 'Literature on music', 'children': []}, {'id': 'M1-5000', 'text': 'Music', 'children': []}]}, {'id': 'U', 'text': 'Military Science', 'children': []}, {'id': 'J', 'text': 'Political science', 'children': [{'id': 'JZ2-6530', 'text': 'International relations', 'children': []}, {'id': 'JF20-2112', 'text': 'Political institutions and public administration (General)', 'children': []}, {'id': 'JA1-92', 'text': 'Political science (General)', 'children': []}, {'id': 'JC11-607', 'text': 'Political theory', 'children': []}, {'id': 'JQ1-6651', 'text': 'Political institutions and public administration - Asia (Asian studies only)', 'children': []}, {'id': 'JV1-9480', 'text': 'Colonies and colonization. Emigration and immigration. International migration', 'children': []}]}, {'id': 'B', 'text': 'Philosophy. Psychology. Religion', 'children': [{'id': 'BH1-301', 'text': 'Aesthetics', 'children': []}, {'id': 'BP1-610', 'text': 'Islam. Bahai Faith. Theosophy, etc.', 'children': [{'id': 'BP300-395', 'text': 'Bahai Faith', 'children': []}, {'id': 'BP595-597', 'text': 'Anthroposophy', 'children': []}, {'id': 'BP600-610', 'text': 'Other beliefs and movements', 'children': []}, {'id': 'BP1-253', 'text': 'Islam', 'children': []}, {'id': 'BP500-585', 'text': 'Theosophy', 'children': []}]}, {'id': 'BF1-990', 'text': 'Psychology', 'children': [{'id': 'BF309-499', 'text': 'Consciousness. Cognition', 'children': []}]}, {'id': 'BM1-990', 'text': 'Judaism', 'children': []}, {'id': 'BX1-9999', 'text': 'Christian Denominations', 'children': []}, {'id': 'BQ1-9800', 'text': 'Buddhism', 'children': []}, {'id': 'BD10-701', 'text': 'Speculative philosophy', 'children': [{'id': 'BD143-237', 'text': 'Epistemology. 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Rationalism', 'children': [{'id': 'BL1-50', 'text': 'Religion (General)', 'children': []}, {'id': 'BL74-99', 'text': 'Religions of the world', 'children': []}, {'id': 'BL660-2680', 'text': 'History and principles of religions', 'children': [{'id': 'BL1000-2370', 'text': 'Asian. Oriental', 'children': []}]}, {'id': 'BL51-65', 'text': 'Philosophy of religion. Psychology of religion. Religion in relation to other subjects', 'children': []}]}, {'id': 'BJ1-1725', 'text': 'Ethics', 'children': [{'id': 'BJ1188-1295', 'text': 'Religious ethics', 'children': []}]}, {'id': 'BV1-5099', 'text': 'Practical Theology', 'children': [{'id': 'BV4485-5099', 'text': 'Practical religion. The Christian life', 'children': [{'id': 'BV4625-4780', 'text': 'Moral theology', 'children': []}]}]}, {'id': 'BT10-1480', 'text': 'Doctrinal Theology', 'children': [{'id': 'BT1313-1480', 'text': 'History of specific doctrines and movements. 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Ionized gases', 'children': []}, {'id': 'QC701-715.4', 'text': 'Electric discharge', 'children': []}]}]}, {'id': 'QC120-168.85', 'text': 'Descriptive and experimental mechanics', 'children': []}, {'id': 'QC770-798', 'text': 'Nuclear and particle physics. Atomic energy. Radioactivity', 'children': [{'id': 'QC793-793.5', 'text': 'Elementary particle physics', 'children': []}, {'id': 'QC794.95-798', 'text': 'Radioactivity and radioactive substances', 'children': []}]}, {'id': 'QC1-75', 'text': 'General', 'children': []}, {'id': 'QC170-197', 'text': 'Atomic physics. 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Computer science', 'children': [{'id': 'QA76.75-76.765', 'text': 'Computer software', 'children': []}]}]}, {'id': 'QA273-280', 'text': 'Probabilities. Mathematical statistics', 'children': []}, {'id': 'QA801-939', 'text': 'Analytic mechanics', 'children': []}, {'id': 'QA299.6-433', 'text': 'Analysis', 'children': []}]}]}, {'id': 'H', 'text': 'Social Sciences', 'children': [{'id': 'HV1-9960', 'text': 'Social pathology. Social and public welfare. Criminology', 'children': []}, {'id': 'HQ1-2044', 'text': 'The family. Marriage. Woman', 'children': [{'id': 'HQ1088-1090.7', 'text': 'Men', 'children': []}, {'id': 'HQ1101-2030.7', 'text': 'Women. Feminism', 'children': []}]}, {'id': 'HS1-3371', 'text': 'Societies: secret, benevolent, etc.', 'children': []}, {'id': 'HD28-9999', 'text': 'Industries. Land use. Labor', 'children': [{'id': 'HD2321-4730.9', 'text': 'Industry', 'children': [{'id': 'HD2337-2339', 'text': 'Sweatshops', 'children': []}, {'id': 'HD2331-2336', 'text': 'Home labor. Home-based businesses', 'children': []}, {'id': 'HD2330', 'text': 'Rural industries', 'children': []}, {'id': 'HD2329', 'text': 'Industrialization', 'children': []}, {'id': 'HD2340.8-2346.5', 'text': 'Small and medium-sized businesses, artisans, handicrafts, trades', 'children': []}]}, {'id': 'HD28-70', 'text': 'Management. Industrial management', 'children': [{'id': 'HD50-50.5', 'text': 'Delegation of authority. Decentralization. Span of control', 'children': []}, {'id': 'HD41', 'text': 'Competition', 'children': []}, {'id': 'HD58.7-58.95', 'text': 'Organizational behaviour, change and effectiveness. Corporate culture', 'children': []}, {'id': 'HD45-45.2', 'text': 'Technological innovations. Automation', 'children': []}, {'id': 'HD56-57.5', 'text': 'Industrial productivity', 'children': []}, {'id': 'HD49-49.5', 'text': 'Crisis management. Emergency management. Inflation', 'children': []}, {'id': 'HD66-66.2', 'text': 'Work groups. Team work in industry. Quality circles', 'children': []}, {'id': 'HD39-40.7', 'text': 'Capital. Capital investments', 'children': []}, {'id': 'HD69', 'text': 'Other', 'children': []}, {'id': 'HD62', 'text': 'Standardization. Simplification. Waste', 'children': []}, {'id': 'HD61', 'text': 'Risk in industry. Risk management', 'children': []}, {'id': 'HD60-60.5', 'text': 'Social responsibility of business', 'children': []}, {'id': 'HD58', 'text': 'Location industry', 'children': []}, {'id': 'HD59-59.6', 'text': 'Public relations. Industrial publicity', 'children': []}, {'id': 'HD62.2-62.8', 'text': 'Management of special enterprises', 'children': []}, {'id': 'HD47-47.4', 'text': 'Costs', 'children': []}]}, {'id': 'HD72-88', 'text': 'Economic growth, development, planning', 'children': []}, {'id': 'HD101-1395.5', 'text': 'Land use', 'children': [{'id': 'HD1286-1339', 'text': 'Land tenure', 'children': [{'id': 'HD1326-1329', 'text': 'Large holdings', 'children': []}, {'id': 'HD1334-1335', 'text': 'Consolidation of land holdings', 'children': []}, {'id': 'HD1336-1339', 'text': 'Small holdings. Peasant proprietors. Parcellation', 'children': []}, {'id': 'HD1330-1331', 'text': 'Landlord and peasant', 'children': []}, {'id': 'HD1286-1289', 'text': 'Communal ownership', 'children': []}, {'id': 'HD1332-1333.5', 'text': 'Land reform. Agrarian reform', 'children': []}, {'id': 'HD1290-1291', 'text': 'Municipal ownership', 'children': []}, {'id': 'HD1301-1313', 'text': 'Nationalization (Agrarian socialism)', 'children': []}]}, {'id': 'HD1361-1395.5', 'text': 'Real estate business', 'children': []}]}, {'id': 'HD2350.8-2356', 'text': 'Large industry. Factory system. Big business', 'children': [{'id': 'HD3611-4730.9', 'text': 'Industrial policy. The state and industrial organization', 'children': []}, {'id': 'HD2951-3575', 'text': 'Cooperation. Cooperative societies', 'children': []}, {'id': 'HD2709-2930.7', 'text': 'Corporations', 'children': []}, {'id': 'HD2421-2429', 'text': 'Trade associations', 'children': []}, {'id': 'HD2365-2385', 'text': 'Contracting. Letting of contracts', 'children': []}]}, {'id': 'HD9000-9999', 'text': 'Special industries and trades', 'children': [{'id': 'HD9650-9663', 'text': 'Chemical industries', 'children': []}, {'id': 'HD9000-9495', 'text': 'Agricultural industries', 'children': []}, {'id': 'HD9502-9502.5', 'text': 'Energy industries. Energy policy. Fuel trade', 'children': []}, {'id': 'HD9680-9714', 'text': 'Mechanical industries', 'children': []}, {'id': 'HD9999', 'text': 'Miscellaneous industries and trades', 'children': []}, {'id': 'HD9506-9624', 'text': 'Mineral industries. Metal trade', 'children': []}, {'id': 'HD9665-9675', 'text': 'Pharmaceutical industry', 'children': []}, {'id': 'HD9720-9975', 'text': 'Manufacturing industries', 'children': []}, {'id': 'HD9715-9717.5', 'text': 'Construction industry', 'children': []}]}, {'id': 'HD4801-8943', 'text': 'Labor. Work. Working class', 'children': [{'id': 'HD8045-8943', 'text': 'By region or country', 'children': []}, {'id': 'HD6951-6957', 'text': 'Industrial sociology. Social conditions of labor', 'children': []}, {'id': 'HD6941-6948', 'text': 'Employers associations', 'children': []}, {'id': 'HD6958.5-6976', 'text': 'Industrial relations', 'children': []}, {'id': 'HD5701-6000.9', 'text': 'Labor market. Labor supply. Labor demand', 'children': []}, {'id': 'HD8038', 'text': 'Professions (General). Professional employees', 'children': []}, {'id': 'HD4861-4895', 'text': 'Labor systems', 'children': []}, {'id': 'HD6350-6940.7', 'text': 'Trade unions. Labor unions. Workers associations', 'children': []}, {'id': 'HD7260-7780.8', 'text': 'Industrial hygiene. Industrial welfare', 'children': []}, {'id': 'HD8039', 'text': 'By industry or trade', 'children': []}, {'id': 'HD7255-7256', 'text': 'Vocational rehabilitation. Employment of people with disabilities', 'children': []}, {'id': 'HD5650-5660', 'text': 'Employee participation in management. Employee ownership. Industrial democracy. Works councils', 'children': []}, {'id': 'HD7795-8027', 'text': 'Labor policy. Labor and the state', 'children': []}, {'id': 'HD7088-7252', 'text': 'Social insurance. Social security. Pension', 'children': []}, {'id': 'HD8031', 'text': 'Labor in politics. Political activity of the working class', 'children': []}, {'id': 'HD6977-7080', 'text': 'Cost and standard of living', 'children': []}, {'id': 'HD5481-5630.7', 'text': 'Industrial arbitration. Meditation and conciliation', 'children': []}, {'id': 'HD6050-6305', 'text': 'Classes of labor', 'children': []}, {'id': 'HD5106-5267', 'text': 'Hours of labor', 'children': []}, {'id': 'HD5306-5474', 'text': 'Labor disputes. 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Sales executives', 'children': []}, {'id': 'HF5387-5387.5', 'text': 'Business ethics', 'children': []}, {'id': 'HF5482.6-5482.65', 'text': 'Black market', 'children': []}, {'id': 'HF5801-6182', 'text': 'Advertising', 'children': []}, {'id': 'HF5381-5386', 'text': 'Vocational guidance. Career development', 'children': []}, {'id': 'HF5548.7-5548.85', 'text': 'Industrial psychology', 'children': []}, {'id': 'HF5691-5716', 'text': 'Business mathematics. Commercial arithmetic. Including tables, etc.', 'children': []}, {'id': 'HF5484-5495', 'text': 'Warehouses. Storage', 'children': []}, {'id': 'HF5446-5459', 'text': 'Canvassing. Peddling', 'children': []}, {'id': 'HF5410-5417.5', 'text': 'Marketing. Distribution of products', 'children': []}, {'id': 'HF5761-5780', 'text': 'Shipment of goods. Delivery of goods', 'children': []}, {'id': 'HF5419-5422', 'text': 'Wholesale trade', 'children': []}, {'id': 'HF5460-5469.5', 'text': 'Department stores. Mail order business. Supermarkets. Convenience stores', 'children': []}, {'id': 'HF5546-5548.6', 'text': 'Office management', 'children': []}, {'id': 'HF5429.7-5430.6', 'text': 'Shopping centers. Shopping malls', 'children': []}, {'id': 'HF5549-5549.5', 'text': 'Personnel management. Employment management', 'children': []}, {'id': 'HF5735-5746', 'text': 'Business records management', 'children': []}]}, {'id': 'HF1014', 'text': 'Balance of trade', 'children': []}, {'id': 'HF1040-1054', 'text': 'Commodities. Commercial products', 'children': []}, {'id': 'HF1021-1027', 'text': 'Commercial geography. Economic geography', 'children': []}, {'id': 'HF294-343', 'text': 'Boards of trade. Chambers of commerce. Merchants associations', 'children': []}]}, {'id': 'HE1-9990', 'text': 'Transportation and communications', 'children': [{'id': 'HE9713-9715', 'text': 'Cellular telephone services industry. Wireless telephone industry', 'children': []}]}, {'id': 'H53', 'text': 'Social sciences and state - Asia (Asian studies only)', 'children': []}, {'id': 'HN1-995', 'text': 'Social history and conditions. Social problems. Social reform', 'children': []}, {'id': 'HX1-970.7', 'text': 'Socialism. Communism. Anarchism', 'children': []}, {'id': 'HC10-1085', 'text': 'Economic history and conditions', 'children': [{'id': 'HC92', 'text': 'Economic geography of the oceans (General)', 'children': []}]}, {'id': 'HT51-1595', 'text': 'Communities. Classes. Races', 'children': [{'id': 'HT101-395', 'text': 'Urban groups. The city. Urban sociology', 'children': [{'id': 'HT351-352', 'text': 'Suburban cities and towns', 'children': []}, {'id': 'HT161-165', 'text': 'Garden cities. The city beautiful', 'children': []}, {'id': 'HT231', 'text': 'Effect of city life', 'children': []}, {'id': 'HT388', 'text': 'Regional economics. Space in economics', 'children': []}, {'id': 'HT390-395', 'text': 'Regional planning', 'children': []}, {'id': 'HT165.5-169.9', 'text': 'City planning', 'children': []}, {'id': 'HT321-325', 'text': 'The city as an economic factor. City promotion', 'children': []}, {'id': 'HT361-384', 'text': 'Urbanization. City and country', 'children': []}, {'id': 'HT170-178', 'text': 'Urban renewal. Urban redevelopment', 'children': []}, {'id': 'HT330-334', 'text': 'Metropolitan areas', 'children': []}, {'id': 'HT201-221', 'text': 'City population. Including children in cities, immigration', 'children': []}]}, {'id': 'HT51-65', 'text': 'Human settlements. Communities', 'children': []}]}, {'id': 'HM401-1281', 'text': 'Sociology (General)', 'children': []}, {'id': 'HG1-9999', 'text': 'Finance', 'children': [{'id': 'HG1501-3550', 'text': 'Banking', 'children': []}, {'id': 'HG3810-4000', 'text': 'Foreign exchange (Asian studies only)', 'children': []}, {'id': 'HG8011-9999', 'text': 'Insurance', 'children': []}]}, {'id': 'HB1-3840', 'text': 'Economic theory. Demography', 'children': [{'id': 'HB71-74', 'text': 'Economics as a science', 'children': []}, {'id': 'HB848-3697', 'text': 'Demography. Population. Vital events', 'children': []}]}, {'id': 'H1-99', 'text': 'Social sciences (General)', 'children': []}]}] |
