I L O <br/><br/>
Introduction to work study. 
I L O 
 - 3nd 
 - New Delhi  Oxford & IBH  2001 
 - 411 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Work study.
<br/><br/><label>Dewey Class. No.: </label>658.542 IL-I