INTERNATIONAL LABOUR OFFICE. <br/><br/>
Introduction to work study. 

 - ed. 
 - Geneva :  international labour office,  1974. 
 - 436  p. ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label> $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>work study.