Page:Library of Congress Classification Outline.djvu/116

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HD6951-6957     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 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
Including electric utilities, electronic industries, and machinery
HD9715-9717.5 Construction industry
HD9720-9975 Manufacturing industries
HD9999 Miscellaneous industries and trades