Keller Peter C <br/><br/>
Gemstones and their origins 
Keller Peter C 
 - New York       Van Nostrand Reinhold        1990 
 - xv, 144p.  cm. 
<br/><br/><label>Standard No.: </label>45904 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Rocks<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H19, N0