Encyclopedia of minerals :  
Willard L. Roberts ; G. R. Rapp Jr. ; J. Weber ; Foreward by C. Frondel. 
 - New York :  Van Nostrand Reinhold Company,  1974. 
 - 693 p. :   ill.  ;  28 cm. 
 - 549(03)(NLA) .
<br/><br/><label>ISBN: </label>0442268203 
<br/><br/><label>Universal Decimal Class. No.: </label>549(03)(NLA)