Hurlbut Jr <br/><br/>
Gemología 
Hurlbut Jr, Cornelius S.; Switzer, George S. 
 - 2da 
 - Barcelona  Omega  1980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEMOLOGIA
<br/><br/><label>Universal Decimal Class. No.: </label>549.091