Khanna O P <br/><br/>
Work study:motion and time study 
Khanna O P 
 - New Delhi  Dhanpat Rai  2014 
 - xvii,810 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Work study
<br/><br/><label>Dewey Class. No.: </label>658.542 K145W