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Library of Congress Subject Areas (2122)
- G Geography. Anthropology. Recreation (3)
  - G Geography (General) (3)
- H Social Sciences (1988)
  - H Social Sciences (General) (1691)
  - HA Statistics (3)
  - HB Economic Theory (4)
  - HC Economic History and Conditions (5)
  - HD Industries. Land use. Labor (6)
    - HD28 Management. Industrial Management (1)
    - HD61 Risk Management (1)
  - HE Transportation and Communications (157)
  - HF Commerce (421)
    - HF5601 Accounting (14)
  - HG Finance (154)
  - HJ Public Finance (4)
  - HN Social history and conditions. Social problems. Social reform (1)
- Q Science (2)
  - Q Science (General) (1)
  - QA Mathematics (1)
    - QA76 Computer software (1)
- S Agriculture (57)
  - S Agriculture (General) (57)
- T Technology (130)
  - T Technology (General) (130)
    - T201 Patents. Trademarks (11)
  - TA Engineering (General). Civil engineering (General) (2)