Search Results       Your search for [subject]Hours of labor -- United States -- History -- 20th century returned 1 record.           Hours of work and the fair labor standards act : a study of retail and wholesale trade, 1938-1950. by Costa, Dora L.; Cambridge: National Bureau of Economic Research, 1998. Subject: Hours of labor -- United States -- History -- 20th century; Wholesale trade -- United States -- Employees -- Legal status, laws, etc. -- History -- 20th century; Retail tradeUnited States -- Employees, -- Legal status, etc. -- History -- 20th century.          Add to Book Cart Relevance: 31.92%