11663-1986 <br/><br/>
CONVENTIONAL REPRESENTATIONS OF COMMON FEATURES AND MATERIALS ON TECHNICAL DRAWINGS 

 - 0 
 - DELHI  ISI  1986 
 - 12 
<br/><br/><label>ISBN: </label>NULL 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NULL
<br/><br/><label>Dewey Class. No.: </label>630