Botkin, Daniel B. <br/><br/>
Environmental studies  The earth as a living planet 

 - Columbus  Charles E. Merrill Publishing Company  1982 
 - ix,506 
<br/><br/><label>ISBN: </label>0-675-09813-0 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>574.5