I. L. O., Au. <br/><br/>
Introduction to work study 

 - Genena  International Labour Office  1974 
 - 436p.  25cm. 
<br/><br/><label>ISBN: </label>9221000117 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Work study
<br/><br/><label>Dewey Class. No.: </label>621.71  / I5I