00670nam0 2200205 450 00001120920080924144611.020080514d1947----km-y0itay50------baengGBy-------001yyTime study and common sensea critical study of some conceptions and methods with suggestions for improvementAbraham CohenLondonMacdonald & Evans1947112 p.22 cmCohen,Abraham45805ITUNIPARTHENOPE20080924RICAUNIMARC000011209211.1/601399NAVA22008Time study and common sense1204212UNIPARTHENOPE