Niebel, Benjamin W. <br/><br/>
Motion and time study / 
Benjamin W. Niebel. 
 - 5th ed. 
 - Homewood, Ill.:  R. D. Irwin,  1972. 
 - xii, 709 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motion study.<br/>Time study.