George E Harlow,Joseph J Peters <br/><br/>
Minerals and gems 

 - Abbeville Press Publ., New York  c1994 
 - 336p 
<br/><br/><label>ISBN: </label>1-55859-273-3 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Polytechnic - Jewellery
<br/><br/><label>Dewey Class. No.: </label>549.074 Har/Pet