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Library of Congress Subject Areas (45933)
- A General Works (250)
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- B Philosophy. Psychology. Religion (4736)
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- M Music and Books on Music (206)
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- N Fine Arts (2316)
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- P Language and Literature (3990)
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- Q Science (13233)
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        QA76.76.I59 Interactive media, hypermedia (23)
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- R Medicine (2734)
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      - R729.5.G4 General practice (42)
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  - RA Public aspects of medicine (684)
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