Spanton, J. Humphrey. <br/><br/>
Geometrical drawing and design / 
by J. Humprey Spanton. 
 - London :  Macmillan,  1961. 
 - x, 262 p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometrical drawing--Design.<br/>Engineering drawings--Design.