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Library of Congress Subject Areas (464)
- A General Works (5)
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- Business (64)
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- L Education (21)
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- N Fine Arts (17)
  - N Visual arts (General) For photography, see TR (14)
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    - RA0421 Public health. Hygiene. Preventive Medicine (1)
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- T Technology (174)
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    - Information System (54)
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  - TA Engineering (General). Civil engineering (General) (13)
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- V Naval Science (1)
  - VM Naval architecture. Shipbuilding. Marine engineering (1)