Head, George O. <br/><br/>
Autocad 3D book / 
By George O Head, Charles A Pietra and Kenneth J L Segal. 
 - 1st ed. 
 - New Delhi :  Galgotia Publication Pvt Ltd ,  1990. 
 - xxix,319p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning the ropes<br/>AutoCADs user coordinate system
<br/><br/><label>Dewey Class. No.: </label>620.00420285   / HEAG