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Library of Congress Subject Areas (4220)
- A General Works (30)
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- B Philosophy. Psychology. Religion (1267)
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- C Auxiliary Sciences of History (4)
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- G Geography. Anthropology. Recreation (467)
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- H Social Sciences (579)
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- N Fine Arts (318)
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    - NX456.5.P38 Performance Art (18)
- P Language and Literature (632)
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- Q Science (329)
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    - QA76.9.H85 Human-Computer Interaction; Virtual Reality; Mixed Reality; Augmented Reality ; Extended Reality (31)
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- R Medicine (372)
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- S Agriculture (3)
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- T Technology (92)
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  - TR Photography (33)
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- U Military Science (4)
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