Sinkankas, John <br/><br/>
Prospecting For Gemstones And Minerals / 
by John Sinkankas 
 - 2nd.ed. 
 - New York :  Van Nostrand Reinhold Company ,  1970 
 - xviii, 397 pages.:  illustrations .;  23 cm 
<br/><br/> First ed. published in 1961 under title: Gemstones and minerals: how and where to find them 
<br/><br/>Includes bibliographical references (p.: 380 - 387 ), indexs ( p.: 389 - 397) 
<br/><br/><label>ISBN: </label>0442076193 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Precious stones<br/>Mineralogy
<br/><br/><label>Dewey Class. No.: </label>622.18  / SIN 1970