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Library of Congress Subject Areas (83)
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      - Computer engineering. Computer hardware (25)
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  - TL Motor vehicles. Aeronautics. Astronautics (1)
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    - Metallurgy (3)
    - Mineral deposits. Metallic ore deposits. Prospecting (2)
  - TP Chemical technology (279)
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    - Chemicals: Manufacture, use, etc. (3)
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    - Animal feeds and feed mills. Pet food industry (1)
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    - Packaging (3)
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    - Nutrition. Foods and food supply (18)
    - Recreational vehicle living (2)
- V Naval Science (1)
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- Veterinary Medicine (342)
- Z Bibliography. Library Science. Information Resources (11)
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