000 00270nam a2200109Ia 4500
100 _aRalph M Barnes
245 _aMotion and Time Study: Design and Measurement of Work
250 _a6
260 _c1968
_bJOHN WILEY AND SONS INC
_aNew York
300 _axi+799
942 _cBK
999 _c5538
_d5538