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Library of Congress Subject Areas (8932)
- A General Works (8)
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- D History General and Old World (535)
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- L Education (146)
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- N Fine Arts (353)
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- P Language and Literature (180)
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- Q Science (2327)
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- R Medicine (216)
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- T Technology (3549)
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    - TR624-835 Applied photography (Including artistic, commercial, medical photography, photocopying processes) (1)
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