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

 - 7th ed. 
 - New York :  John Wiley ,  2002. 
 - 689 p. 
<br/><br/><label>ISBN: </label>9814126187 
<br/><br/><label>Subjects--Index Terms: </label>Motion And Time Study