Böngészés, Szakterület

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Library of Congress Subject Areas (9713)
- A General Works (974)
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- C Auxiliary Sciences of History (1431)
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- G Geography. Anthropology. Recreation (36)
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- K Law (27)
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- P Language and Literature (1404)
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- Q Science (1008)
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- T Technology (3)
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- U Military Science (16)
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- Z Bibliography. Library Science. Information Resources (26)
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