Barnes, Ralph M <br/><br/>
Motion and time study design and measurement of work 

 - 7th ed 
 - John Wiley, New York  1980 
 - xi,689p ill. 
<br/><br/><label>ISBN: </label>0-471-05905-6 
<br/><br/><label>Dewey Class. No.: </label>658.542 Bar