00313nam a2200121Ia 4500082002100000100002600021245004300047260002100090300002800111490004200139500000500181700000500186  a658.52bSm648.WM  aSmith, George L., Jr.  aWork measurement; a systems approachb  aOhiobGridc1978  aix, 123p. Index, Tables  aGRID series in Industrial Engineering  a  a