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Library of Congress Subject Areas (1289)
- A General Works (1)
  - AS Academies and learned societies (General) (1)
- H Social Sciences (819)
  - H Social Sciences (General) (148)
  - HB Economic Theory (103)
  - HC Economic History and Conditions (84)
  - HD Industries. Land use. Labor (213)
    - HD28 Management. Industrial Management (180)
    - HD61 Risk Management (32)
  - HE Transportation and Communications (33)
  - HF Commerce (248)
    - HF5601 Accounting (245)
  - HG Finance (4)
  - HJ Public Finance (2)
  - HT Communities. Classes. Races (2)
  - HV Social pathology. Social and public welfare (1)
- J Political Science (1)
  - JC Political theory (1)
- K Law (38)
  - K Law (General) (38)
- P Language and Literature (29)
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  - PR English literature (3)
- Q Science (60)
  - Q Science (General) (11)
  - QA Mathematics (51)
    - QA75 Electronic computers. Computer science (26)
    - 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 (29)
  - S Agriculture (General) (29)
- T Technology (157)
  - T Technology (General) (4)
  - TA Engineering (General). Civil engineering (General) (115)
  - TD Environmental technology. Sanitary engineering (1)
  - TE Highway engineering. Roads and pavements (1)
  - TH Building construction (1)
  - TJ Mechanical engineering and machinery (38)
  - TK Electrical engineering. Electronics Nuclear engineering (1)