Elements of mechanism 
Doughty, Venton Levy. 
 -  John Wiley & Sons, Inc.  1954 
 - 494 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71081493-1 
<br/><br/><label>Dewey Class. No.: </label>620.107 D75e 1954