International labour office <br/><br/>
Introduction to work study, 3rd ed 

 - 3rd ed 
 - Oxford & IBH publishing co. pvt. ltd, New Delhi  1986 
 - xic,442 
<br/><br/><label>ISBN: </label>92-2-101939-X 
<br/><br/><label>Dewey Class. No.: </label>658.542 I.L.O