Introduction to work study/  English. 
International Labour Office. 
 - 3rd (rev.) ed. 
 - Geneva :  International Labour Office,  1979. 
 - xiv, 442 p. :  ill. ;  28 cm. 
<br/><br/> Errata slip inserted. 
<br/><br/>Bibliography: p. 439-441. 
<br/><br/><label>ISBN: </label>922101939X  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Work measurement.<br/>Methods engineering.
<br/><br/><label>Dewey Class. No.: </label>65.015  / INT