Page:Library of Congress Classification Outline.djvu/116

 {| width="100%" class="_valignt" Including electric utilities, electronic industries, and machinery
 * width="20%"| HD6951-6957 || width="10%" |  || width="10%" |   || Industrial sociology. Social conditions of labor
 * HD6958.5-6976 || || || Industrial relations
 * HD6977-7080 || || || Cost and standard of living
 * HD7088-7252 || || || Social insurance. Social security. Pension
 * HD7255-7256 || || || Vocational rehabilitation. Employment of people with disabilities
 * HD7260-7780.8 || || || Industrial hygiene. Industrial welfare
 * HD7795-8027 || || || Labor policy. Labor and the state
 * HD8031 || || || Labor in politics. Political activity of the working class
 * HD8038 || || || Professions (General). Professional employees
 * HD8039 || || || By industry or trade
 * HD8045-8943 || || || By region or country
 * HD9000-9999 || || colspan="2" | Special industries and trades
 * HD9000-9495 || || || Agricultural industries
 * HD9502-9502.5 || || || Energy industries. Energy policy. Fuel trade
 * HD9506-9624 || || || Mineral industries. Metal trade
 * HD9650-9663 || || || Chemical industries
 * HD9665-9675 || || || Pharmaceutical industry
 * HD9680-9714 || || || Mechanical industries
 * HD8039 || || || By industry or trade
 * HD8045-8943 || || || By region or country
 * HD9000-9999 || || colspan="2" | Special industries and trades
 * HD9000-9495 || || || Agricultural industries
 * HD9502-9502.5 || || || Energy industries. Energy policy. Fuel trade
 * HD9506-9624 || || || Mineral industries. Metal trade
 * HD9650-9663 || || || Chemical industries
 * HD9665-9675 || || || Pharmaceutical industry
 * HD9680-9714 || || || Mechanical industries
 * HD9506-9624 || || || Mineral industries. Metal trade
 * HD9650-9663 || || || Chemical industries
 * HD9665-9675 || || || Pharmaceutical industry
 * HD9680-9714 || || || Mechanical industries
 * HD9665-9675 || || || Pharmaceutical industry
 * HD9680-9714 || || || Mechanical industries
 * HD9680-9714 || || || Mechanical industries
 * HD9680-9714 || || || Mechanical industries
 * HD9715-9717.5 || || || Construction industry
 * HD9720-9975 || || || Manufacturing industries
 * HD9999 || || || Miscellaneous industries and trades
 * }
 * HD9999 || || || Miscellaneous industries and trades
 * }
 * }