Spence, William Perkins,  1925- <br/><br/>
Drafting technology and practice / 
by William P. Spence. 
 - Peoria, Illinois :  Chas. A. Bennett,  1973. 
 - 814 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>087002129X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical drawing.