Betterley, Melvin L. <br/><br/>
Sheet metal drafting / 
Melvin L. Betterley. 
 - Second edition 
 - vi, 314 pages :  illustrations ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0070051267 9780070051263 
<br/><br/><label>LCCN: </label>77002764  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sheet-metal work--Patternmaking.<br/>Mechanical drawing.
<br/><br/><label>LC Class. No.: </label>TS250  / .B4 1978 
<br/><br/><label>Dewey Class. No.: </label>604/.2/671