The complete guide to rocks, gems & minerals / 
Petersen Publishing Company. 
 - Secaucus :  Castle Books,  1977. 
 - 88 pages :   illustrations (some color), maps ;   28 cm. 
 - 691.2 (NLA) .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy
<br/><br/><label>Universal Decimal Class. No.: </label>691.2 (NLA)