Spence, William Perkins <br/><br/>
Drafting technology and practice 
William P. Spence 
 - Peoria, Ill.,  C. A. Bennett  c1973 
 - 814 p.  illus.  24 cm. 
<br/><br/><label>ISBN: </label>087002129X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical drawing.