Nagpal, G R <br/><br/>
Machine Drawing  Text book for Diploma and Degree Engg Students 

 - Delhi  Khanna   1978 
 - p.239 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering Drawing<br/>Geometrical Constructions
<br/><br/><label>Dewey Class. No.: </label>744.422 N1525M