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Library of Congress Subject Areas (2586)
- A General Works (55)
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  - AS Academies and learned societies (General) (33)
- B Philosophy. Psychology. Religion (15)
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- C Auxiliary Sciences of History (2)
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- G Geography. Anthropology. Recreation (7)
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- K Law (14)
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- L Education (557)
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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 (2136)
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- S Agriculture (3)
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- Z Bibliography. Library Science. Information Resources (52)
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