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Library of Congress Subject Areas (1456)
- A General Works (11)
  - AS Academies and learned societies (General) (10)
  - AZ History of Scholarship The Humanities (1)
- G Geography. Anthropology. Recreation (1)
  - GR Folklore (1)
- H Social Sciences (907)
  - H Social Sciences (General) (154)
  - HB Economic Theory (108)
  - HC Economic History and Conditions (86)
  - HD Industries. Land use. Labor (256)
    - HD28 Management. Industrial Management (223)
    - HD61 Risk Management (32)
  - HE Transportation and Communications (48)
  - HF Commerce (267)
    - HF5601 Accounting (264)
  - HG Finance (5)
  - HJ Public Finance (3)
- K Law (50)
  - K Law (General) (50)
  - KZ Law of Nations (1)
- P Language and Literature (36)
  - PE English (28)
  - PN Literature (General) (1)
    - PN0080 Criticism (1)
  - PR English literature (7)
  - PZ Children's literature (1)
- Q Science (71)
  - Q Science (General) (11)
  - QA Mathematics (61)
    - QA75 Electronic computers. Computer science (35)
    - QA76 Computer software (3)
  - QD Chemistry (1)
  - QR Microbiology (1)
- R Medicine (171)
  - R Medicine (General) (7)
  - RA Public aspects of medicine (1)
  - RM Therapeutics. Pharmacology (2)
  - RS Pharmacy and materia medica (164)
- S Agriculture (33)
  - S Agriculture (General) (33)
- T Technology (177)
  - TA Engineering (General). Civil engineering (General) (132)
  - TJ Mechanical engineering and machinery (40)
  - TP Chemical technology (5)