Earths changing ecosystems  

 - New York:  Harcourt, 
 - 16p.;  col ill.;  23cm 
<br/><br/><label>ISBN: </label>0-15-343975-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mountains
<br/><br/><label>Dewey Class. No.: </label>372.357  / EAR