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Library of Congress Subject Areas (2791)
- A General Works (56)
  - AC Collections. Series. Collected works (15)
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  - AS Academies and learned societies (General) (33)
- B Philosophy. Psychology. Religion (17)
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- C Auxiliary Sciences of History (2)
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- G Geography. Anthropology. Recreation (9)
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- K Law (19)
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- L Education (663)
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- M Music and Books on Music (5)
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- P Language and Literature (2)
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- R Medicine (2296)
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- S Agriculture (3)
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- Z Bibliography. Library Science. Information Resources (57)
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