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Library of Congress Subject Areas (3588)
- A General Works (6)
  - AC Collections. Series. Collected works (3)
  - AS Academies and learned societies (General) (3)
- B Philosophy. Psychology. Religion (991)
  - B Philosophy (General) (49)
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- G Geography. Anthropology. Recreation (3)
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- H Social Sciences (1228)
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- J Political Science (8)
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- L Education (259)
  - L Education (General) (223)
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  - LC Special aspects of education (1)
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- M Music and Books on Music (6)
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- N Fine Arts (18)
  - N Visual arts (General) For photography, see TR (14)
  - NX Arts in general (4)
- P Language and Literature (54)
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- Q Science (243)
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- S Agriculture (773)
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  - SB Plant culture (32)
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- T Technology (436)
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- Z Bibliography. Library Science. Information Resources (3)
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