Barnes Ralph M <br/><br/>
Motion and time study 

 - 4 
 - New York  John Wiley& Sons         1958 
 - 665p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Work Study
<br/><br/><label>Dewey Class. No.: </label>X:89M, J8;1