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- Library of Congress Subject Areas (1)
- H Social Sciences (1)
- HD Industries. Land use. Labour (1)
- HD4801 Labour. Work. Working class (1)
- HD7260 Industrial hygiene. Industrial welfare (1)
- HD7285 Housing (1)
- HD7291 By region or country (1)
- HD7332 Europe (1)
- HD7291 By region or country (1)
- HD7285 Housing (1)
- HD7260 Industrial hygiene. Industrial welfare (1)
- HD4801 Labour. Work. Working class (1)
- HD Industries. Land use. Labour (1)
- H Social Sciences (1)
Number of items at this level: 0.