Motion and study and time study design and measurement of work 
Barnes, Ralph M. 
 - Seventh edition. 
 -  John Wiley and Sons.  1980 
 - xi, 689 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-471-05905-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motion Study.
<br/><br/><label>Dewey Class. No.: </label>658.542 B39m 1980