The encyclopedia of minerals and gemstones 
edited by Michael O'Donoghue                                    
 - London  Orbis Publishing  1976 
 - 304p. 
<br/><br/><label>ISBN: </label>0-85613-209-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia - gemstones<br/>Encyclopedia - minerals<br/>NASA thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>03:549  / THE