The Library uses the Library of Congress Classification scheme to arrange its materials. The following gives an outline of the main subject divisions of the Library of Congress Classification.
| A
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General Works includes : |
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| AE
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Encyclopedias |
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| AS
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Academies and Learned Societies |
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| AY
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Yearbooks, Almanacs, Directories |
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| B
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Philosophy, Psychology, Religion |
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| C
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Auxiliary Sciences of History : |
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Archaeology, Archives, Numismatics, Biography |
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| D
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History (other than American) |
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| DS
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History of Asia |
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| 701-799
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China |
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| 796.H7
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Hong Kong |
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| E-F
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American History (F includes Canada, Mexico, South America) |
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| G
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Geography (General), Atlases, Maps |
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| 155
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Tourism |
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| GA
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Mathematical Geography, Cartography |
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| GB
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Physical Geography |
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| GC
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Oceanography |
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| GF
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Human Ecology |
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| GN
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Anthropology |
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| GR
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Folklore |
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| GT
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Manners and Customs (General) |
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| GV
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Recreation, Sports |
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| H
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Social Sciences |
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| HA
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Statistics |
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| HB
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Economic Theory |
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| HC
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Economic History and Conditions by Country |
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| 426-430
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China |
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| 470.3
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Hong Kong |
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| HD
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Economic History and Conditions, Land Use, Agriculture, Industry, Labor |
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| 28-88
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Management |
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| HE
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Transportation and Communication |
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| HF
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Commerce: Business |
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| 5410-5418
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Marketing |
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| 5601-5689
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Accountancy |
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| 5801-6182
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Advertising |
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| HG
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Finance : Money, Banking, Investment, Insurance |
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| HJ
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Public Finance : Revenue, Taxation, Expenditure, Public Credit, |
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Local Finance |
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| HM
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Sociology |
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| HN
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Social History and Conditions, Social Problems, Social Reform |
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| HQ
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Social Groups: Family, Marriage, Woman |
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| HS
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Societies: Secret, Benevolent, etc. |
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| HT
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Communities, Classes, Races |
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| HV
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Social Pathology, Social and Public Welfare, Criminology |
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| J
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Politics and Government |
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| K
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Law (General) and Law of Hong Kong |
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| KD
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Law of the United Kingdom and Ireland |
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| KDZ
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Law of America, North America |
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| KE
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Law of Canada |
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| KF
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Law of the United States |
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| KG
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Law of Latin America, Mexico, Central America |
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| KH
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Law of South America |
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| KJV
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Law of France |
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| KK
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Law of Germany and West Germany |
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| L
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Education (General) |
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| 900-991
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Directories of Educational Institutions |
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| LB
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Theory and Practice of Education: Teaching, Teacher Training, School Administration and Organization |
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| LC
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Special Aspects of Education: Social Aspects, Economic Aspects and Education of Special Classes of Persons |
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| LG
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Individual Institutions: Asia, Africa |
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| 51-53
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China, including Hong Kong |
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| M
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Music |
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| N
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Visual Arts |
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| NA
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Architecture |
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| NB
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Sculpture |
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| NC
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Drawing, Design, Illustration, Commercial Arts, Graphics |
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| ND
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Painting |
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| NE
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Print Media |
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| NK
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Decorative Arts, Applied Arts, Decoration and Ornament |
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| NX
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Arts in General |
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| P
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Language and Literature (General) |
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Philology, Linguistics |
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| PE
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English Language and Literature |
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| PL
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Oriental Languages and Literatures |
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| PN
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Literature (General) |
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| 1997
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Feature Films |
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| PR
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English Literature, Fiction |
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| PS
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American Literature, Fiction |
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| Q
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Science (General) |
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| QA
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Mathematics |
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| 76
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Computer Science |
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| QB
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Astronomy |
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| QC
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Physics |
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| QD
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Chemistry |
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| QE
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Geology |
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| QH
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Natural History (General), Biology (General), Ecology |
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| QK
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Botany |
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| QL
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Zoology |
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| QM
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Human Anatomy |
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| QP
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Physiology |
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| QR
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Microbiology |
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| R
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Medicine (General) |
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| RA
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Public Aspects of Medicine: Medicine and the State, Public Health, |
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Environmental Health |
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| RB
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Pathology including Medical Laboratory Technique |
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| RC
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Internal Medicine including Neurology and Psychiatry, Geriatrics, |
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Industrial Medicine, Radiography |
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| RD
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Surgery |
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| RE
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Ophthalmology including Ophthalmic Optics |
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| RF
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Diseases of Ear, Nose and Throat |
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| RG
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Gynecology and Obstetrics |
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| RJ
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Pediatrics |
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| RK
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Dentistry including Dental Technology |
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| RL
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Dermatology |
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| RM
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Therapeutics including Occupational Therapy, Physiotherapy, Pharmacology |
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| RS
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Pharmacy and Materia Medica |
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| RT
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Nursing |
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| RV
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Botanic, Thomsonian and Eclectic Medicine |
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| RX
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Homeopathy |
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| RZ
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Other Systems of Medicine |
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| S
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Agriculture (General) |
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| SB
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Plant Culture |
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| SD
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Forestry |
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| SF
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Animal Culture |
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| SH
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Aquaculture, Fisheries |
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| SK
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Hunting Sports |
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| T
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Technology (General) |
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| TA
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Engineering (General), Civil Engineering |
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| 501-625
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Surveying |
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| 1500-1820
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Applied Optics |
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| TC
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Hydraulic Engineering |
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| TD
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Environmental Technology, Environmental Protection, Sanitary Engineering |
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| TE
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Highway Engineering, Roads and Pavements |
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| TF
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Railroad Engineering and Operation |
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| TG
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Bridge Engineering |
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| TH
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Building Construction |
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| TJ
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Mechanical Engineering and Machinery |
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| TK
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Electrical Engineering |
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| 7800-7895
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Electronics, including Computer Hardware |
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| 9001-9401
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Nuclear Engineering |
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| TL
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Motor Vehicles, Aeronautics, Astronautics |
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| TN
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Mining Engineering, Metallurgy |
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| TP
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Chemical Technology including textile bleaching, dyeing, printing, etc. |
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| TR
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Photography, Applied Photography (Photogrammetry), Photomechanic Processes |
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| TS
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Manufactures |
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| 1300-1865
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Textiles |
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| TT
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Handicrafts, Arts and Crafts |
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| 502
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Fashion |
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| TX
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Home Economics |
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| 645-840
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Cookery |
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| 901-950
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Hotel and Management and Catering Services |
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| U
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Military Science |
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| V
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Naval Science |
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| VK
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Navigation, Merchant Marine |
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| VM
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Naval Architecture, Shipbuilding: Marine Engineering |
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| Z
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Bibliography and Library Science |
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| 52
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Word Processing |