Barnes, Ralph M. <br/><br/>
Motion and time study / 
Ralph M. Barnes. 
 - 4th ed. 
 - New York :  John Wiley,  1958. 
 - xii, 665 p. :  ills. ;  22 cm. 
<br/><br/> Includes Index. 
<br/><br/>Bibliography: p. 641-653. 
<br/><br/>315  315 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motion study.
<br/><br/><label>Dewey Class. No.: </label>658.54 / B263m