Khurmi,R.S <br/><br/>
Textbook of Applied Mechanics:(MKS & SI Units 

 - New Delhi  S.Chand  1981 
 - p.699 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanics<br/>Friction
<br/><br/><label>Dewey Class. No.: </label>620.1 K454T