Mundel,Marvin E. <br/><br/>
Motion and time study  Principles and practice 

 - 3rd ed 
 - New Jersey  Prentice Hall  1950 
 - 690 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>658.542