Botkin D.B.... <br/><br/>
Environmental Studies 

 - Columbus:  Pub.Merrill  0 
 - 686 p. 
 - 2nd edition .
<br/><br/><label>ISBN: </label>675204623 
<br/><br/><label>Subjects--Index Terms: </label>Environmental Studies : Earth as a Living Planet. 
<br/><br/><label>Dewey Class. No.: </label>363.8  / B798