WALTER SCHUMANN <br/><br/>
COLLINS PHOTO  GUIDE TO ROCKS,MINERALS AND GEMSTONES 

 - LONDON  HARPERCOLLINS PUBLISHERS  1992 
 -  380 P 
<br/><br/><label>ISBN: </label>0-00-219909-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/><br/>
<br/><br/><label>Dewey Class. No.: </label>372.357/SCH/COL