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- catalog contributor b7245873.
- catalog created "c1928.".
- catalog date "1928".
- catalog date "c1928.".
- catalog dateCopyrighted "c1928.".
- catalog extent "45 p. ;".
- catalog isPartOf "Harvard social history/business preservation microfilm project. Project 3 ; 30706. mmf".
- catalog issued "1928".
- catalog issued "c1928.".
- catalog language "eng".
- catalog publisher "[Philadelphia] : H. La Rue Frain,".
- catalog spatial "Pennsylvania Philadelphia.".
- catalog subject "HD4915 .F7".
- catalog subject "Hours of labor Pennsylvania Philadelphia.".
- catalog subject "Labor supply Statistics.".
- catalog subject "Metal-workers Pennsylvania Philadelphia.".
- catalog subject "Wages Pennsylvania Philadelphia.".
- catalog title "Factors influencing the collection of wage data : an examination of the relation between some influences relevant to labor and the earnings of workers in certain standard machine tool occupations as shown by data supplied by a group of plants in Philadelphia / by H. La Rue Frain.".
- catalog type "text".