Bretz, Howard. <br/><br/>
Sheet Metal Shop Drawing / 
H. Bretz. 
 - New York :  Industrial Press Inc.,  1971. 
 - 304 p. :  tables. 
<br/><br/>Includes Index. 
<br/><br/><label>ISBN: </label>0-8311-3022-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Drawing<br/>Sheet Metal