Olson, Donald <br/><br/>
Exploring earth's treasures 
written by Donald Olson ; scientific consultant, Joseph Peters 
 - Chicago, IL  Kidsbooks, Inc  c1996 
 - 29 p. : col. ill. ; 24 cm 
<br/><br/><label>ISBN: </label>1561564818 
<br/><br/><label>ISSN: </label>99169770 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gems - Juvenile literature<br/>Precious stones<br/>Precious stones - Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>550 OLS