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Library of Congress Subject Areas (48201)
- A General Works (256)
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- B Philosophy. Psychology. Religion (4969)
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- C Auxiliary Sciences of History (501)
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- M Music and Books on Music (235)
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- N Fine Arts (2388)
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- P Language and Literature (4227)
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- Q Science (13765)
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      - QA76.17 History of computing (4)
      - QA76.575 Multimedia systems (26)
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        QA76.76.I59 Interactive media, hypermedia (24)
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      - QA76.87 Neural computers, neural networks (64)
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        QA612 Algebraic topology (17)
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  - QB Astronomy (578)
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- R Medicine (2799)
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      - R729.5.G4 General practice (42)
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  - RA Public aspects of medicine (686)
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    - RC553.A88 Autism. Asperger's syndrome (45)
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    - RC952 Geriatrics (89)
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    - RJ101 Child Health. Child health services (50)
    - RJ506.A9 Autism. Infantile autism. Asperger's syndrome (2)
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- T Technology (3627)
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