Niebel, Benjamin W. <br/><br/>
Motion and time Study 
/ by Benjamin W. Niebel 
 - Delhi:  Surjeet Publications,  1987. 
 - xi, 756p.; 
<br/><br/><label>ISBN: </label>000 
<br/><br/><label>Dewey Class. No.: </label>658.542  / NIE/M