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Library of Congress Subject Areas (40265)
- A General Works (242)
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- B Philosophy. Psychology. Religion (4094)
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- M Music and Books on Music (175)
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- P Language and Literature (3545)
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- Q Science (11953)
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        QA76.76.I59 Interactive media, hypermedia (20)
      - QA76.76.E95 Expert Systems (Intelligent Knowledge Based Systems) (35)
      - QA76.87 Neural computers, neural networks (45)
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        QA612 Algebraic topology (15)
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  - QB Astronomy (506)
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- R Medicine (2446)
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      - R729.5.G4 General practice (42)
    - R857.O6 Optical coherence tomography (253)
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  - RA Public aspects of medicine (656)
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- S Agriculture (184)
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- T Technology (3139)
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