World mineral statistics 1992-96 
British geological survey. 
 - Keyworth  BGS  1998 
<br/><br/><label>ISBN: </label>0 85272 308 3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>estadisticas<br/>mundiales<br/>minerales
<br/><br/><label>Universal Decimal Class. No.: </label>549 (410.146) (02)