OMURA, George. <br/><br/>
Auto CAD Release 12; Instant Referance 

 -  Singapore. Tech Pub Pte.Ltd.  1992 
 - xiv, 308p. 
<br/><br/><label>ISBN: </label>981-214-037-9 
<br/><br/><label>Dewey Class. No.: </label>1.64