Johnston P. M.  <br/><br/>
Basic sheet metal skills / 
Philip M. Johnston / Murray Liebowitz. 
 - New York  Delmar  1877 
 - 281Pg.   : ill. ; 27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sheet-metal work
<br/><br/><label>LC Class. No.: </label>TS250 .J63