Bancroft, Peter. <br/><br/>
The world's finest minerals and crystals / 
by Peter Bancroft. 
 - New York :  Viking Press,  1973. 
 - 176 p. :  ill. ;  30 cm 
 - 549+548](100) (NLA) .
<br/><br/> includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mineralogy --Pictorial works.
<br/><br/><label>Universal Decimal Class. No.: </label>549+548](100) (NLA)