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Library of Congress Subject Areas (28673)
- A General Works (80)
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- B Philosophy. Psychology. Religion (1075)
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- C Auxiliary Sciences of History (55)
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- D History General and Old World (322)
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- G Geography. Anthropology. Recreation (1529)
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- L Education (4408)
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- M Music and Books on Music (71)
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- N Fine Arts (96)
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- Q Science (3390)
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- S Agriculture (153)
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- T Technology (2287)
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- U Military Science (48)
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- V Naval Science (3)
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- Z Bibliography. Library Science. Information Resources (151)
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