Botkin, Daniel B. <br/><br/>
Environmental studies  the Earth as a living planet 
Daniel B. Botkin and Edward A. Keller 
 - Columbus, [Ohio]  C.E. Merrill Pub. Co.  c1982 
 - ix, 506 p. :  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>0675098130 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Pollution--Environmental aspects<br/>Conservation of natural resources
<br/><br/><label>Dewey Class. No.: </label>574.5