02327oam 2200673I 450 991071419400332120180814091214.0(CKB)3780000000322361(OCoLC)908313394(EXLCZ)99378000000032236120150503d1961 ua 0engurun||||a|a||txtrdacontentcrdamediacrrdacarrierTechnological change and productivity in the bituminous coal industry, 1920-60[Washington, D.C.] :United States Department of Labor, Bureau of Labor Statistics,1961.1 online resource (ii, 137 pages) illustrations, mapsBulletin ;no. 1305"November 1961.""This bulletin was prepared ... by Edgar Weinberg, ... Robert E. Malakoff and Robert T. Adams"--Page 1.Includes bibliographical references (pages 132-136).Bituminous coalCoal mines and miningAutomationCoal mines and miningLabor productivityLabor productivityCoal minersUnited StatesBituminous coalfastCoal minersfastCoal mines and miningAutomationfastCoal mines and miningLabor productivityfastLabor productivityfastUnited StatesfastBituminous coal.Coal mines and miningAutomation.Coal mines and miningLabor productivity.Labor productivity.Coal minersBituminous coal.Coal miners.Coal mines and miningAutomation.Coal mines and miningLabor productivity.Labor productivity.Weinberg Edgar1394299Malakoff Robert E.Adams Robert T.United States.Bureau of Labor Statistics,OCLCEOCLCEOCLCQZ5AGPOMERUCGPOBOOK9910714194003321Technological change and productivity in the bituminous coal industry, 1920-603451466UNINA