Encyclopedia of rocks, mineral, and gemstones 

 - Rivington Street, London :  Brown Partworks,  2001 
 - 304 p. :  ill.  28 cm. 
<br/><br/><label>ISBN: </label>1840440864  RM80.20 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks--Encyclopedias<br/>Minerals--Encyclopedias<br/>Precious stones--Encyclopedias