Dalela, S. <br/><br/>
Text book of work study and ergonomics 

 - Delhi  Nem chand jain  1971 
 - x, 492p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human factors engineering
<br/><br/><label>Dewey Class. No.: </label>620.82  / DAL