Johnston, Philip M. <br/><br/>
Advanced sheet metal skills / 
Philip M. Johnston and Murray Liebowitz 
 - Albany  Delmar Publishers  1978 
 - vi, 306 p.  ill.  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0827312407  RM63.55 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sheet-metal work