Biosphere   A scientific American book    

 - San Francisco    W H Freeman and Company       1970 
 - v,134p.  cm. 
 - Scientific American, Publication .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomorphology
<br/><br/><label>Dewey Class. No.: </label>U211, L0