Barnes, Ralph M. , <br/><br/>
Motion and time study design and measurement of work / 
Ralph M Barnes. 
 - 7th ed. 
<br/><br/><label>ISBN: </label>0471059056 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motion study.<br/>Time study.
<br/><br/><label>LC Class. No.: </label>T60.4   / .B37 1980