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- catalog created "[19--]".
- catalog date "1900".
- catalog date "[19--]".
- catalog dateCopyrighted "[19--]".
- catalog extent "15 p.".
- catalog issued "1900".
- catalog issued "[19--]".
- catalog language "eng".
- catalog publisher "Chicago, Machinery and Allied Products Institute".
- catalog subject "Hours of labor.".
- catalog subject "Machinery in the workplace.".
- catalog subject "Technological unemployment.".
- catalog title "Machines and working hours: a pictorial presentation of facts on mechanization, working hours and the American standard of living.".
- catalog type "text".