000 00337nam a2200145Ia 4500
008 180710s9999 xx 000 0 und d
020 _a255596
082 _a658.542
_bHEI
100 _aHeiland, Robert E.
245 _aWork sampling
260 _aNew York
_bMcGraw-Hill
_c1957
300 _a243 p.
650 _aTime study
942 _cS
999 _c91554
_d91554