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Library of Congress Subject Areas (5733)
- A General Works (29)
  - AC Collections. Series. Collected works (26)
  - AS Academies and learned societies (General) (3)
- B Philosophy. Psychology. Religion (1618)
  - B Philosophy (General) (52)
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- G Geography. Anthropology. Recreation (4)
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  - GN Anthropology (2)
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- H Social Sciences (1945)
  - H Social Sciences (General) (95)
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  - HB Economic Theory (254)
  - HC Economic History and Conditions (282)
  - HD Industries. Land use. Labor (119)
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  - HQ The family. Marriage. Woman (24)
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  - HV Social pathology. Social and public welfare (2)
  - HX Socialism. Communism. Anarchism (1)
- J Political Science (8)
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  - JQ Political institutions Asia (1)
- L Education (363)
  - L Education (General) (316)
  - LB Theory and practice of education (56)
    - LB1501 Primary Education (5)
    - LB1603 Secondary Education. High schools (30)
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  - LC Special aspects of education (1)
  - LT Textbooks (7)
- M Music and Books on Music (6)
  - M Music (4)
  - ML Literature of music (2)
- N Fine Arts (23)
  - N Visual arts (General) For photography, see TR (14)
  - NX Arts in general (9)
- P Language and Literature (98)
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- Q Science (346)
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    - QA76 Computer software (47)
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- R Medicine (26)
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    - RJ101 Child Health. Child health services (2)
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  - RZ Other systems of medicine (1)
- S Agriculture (1345)
  - S Agriculture (General) (724)
  - SB Plant culture (55)
  - SD Forestry (3)
  - SF Animal culture (516)
  - SH Aquaculture. Fisheries. Angling (86)
- T Technology (441)
  - T Technology (General) (403)
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  - TD Environmental technology. Sanitary engineering (3)
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  - TP Chemical technology (23)
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- Z Bibliography. Library Science. Information Resources (3)
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