Betterley, Melvin L. <br/><br/>
Sheet metal drafting. 

 - New York :  McGraw-Hill,  c1961. 
<br/><br/>Bibliography: p. 289. 
<br/><br/><label>ISBN: </label>
<br/><br/><label>LCCN: </label>60011952 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sheet-metal work.<br/>Mechanical drawing.
<br/><br/><label>LC Class. No.: </label>TS250  / .B4 
<br/><br/><label>Dewey Class. No.: </label>744.422