Digital computer simulation -- Congress. <br/><br/>
Gemology  [Books]. 
Cornelius S. Hurlbut [and] George S. Switzer. 
 - New York  John Wiley & Sons  1979 
 - Pages: 243 
<br/><br/><label>ISBN: </label>0471081442  0.00 
<br/><br/><label>Dewey Class. No.: </label>QE/392  / HUR