00610cam a2200193 4500 55707510 TxAuBib 20020405120000.0 020405s1950||||||||||||||||||||||||eng|u l 58000011 DLC CarP DLC TxAuBib United States Department of Labor, Bureau of Labor Statistics. Brief history of the American labor movement. Washington, 1950. 66 p. : illus., ports ; 20-27 cm. Serial. 20020405. Labor unions United States History.