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Library of Congress Subject Areas (1340)
- A General Works (6)
  - AS Academies and learned societies (General) (6)
- H Social Sciences (854)
  - H Social Sciences (General) (147)
  - HB Economic Theory (107)
  - HC Economic History and Conditions (86)
  - HD Industries. Land use. Labor (231)
    - HD28 Management. Industrial Management (198)
    - HD61 Risk Management (32)
  - HE Transportation and Communications (42)
  - HF Commerce (249)
    - HF5601 Accounting (246)
  - HG Finance (7)
  - HJ Public Finance (3)
  - HT Communities. Classes. Races (2)
- K Law (41)
  - K Law (General) (41)
- P Language and Literature (29)
  - PE English (26)
  - PR English literature (3)
- Q Science (62)
  - Q Science (General) (11)
  - QA Mathematics (53)
    - QA75 Electronic computers. Computer science (28)
    - QA76 Computer software (2)
  - QB Astronomy (1)
- R Medicine (155)
  - R Medicine (General) (7)
  - RA Public aspects of medicine (1)
  - RM Therapeutics. Pharmacology (1)
  - RS Pharmacy and materia medica (149)
- S Agriculture (31)
  - S Agriculture (General) (31)
- T Technology (162)
  - T Technology (General) (3)
  - TA Engineering (General). Civil engineering (General) (120)
  - TJ Mechanical engineering and machinery (40)