Design machine of members 
Doughtie, Venton Levy. 
 - Fourth edition. 
 -  McGraw-Hill Book Company.  1978 
 - 520 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71081565-2 
<br/><br/><label>Dewey Class. No.: </label>621.815 Do75d 1978