Keller, Botkin. <br/><br/>
Environmental Science: Earth as a Living Planet / 
Botkin Keller. 
 - 4th Ed. 
 - New York :  Wiley,  2003. 
 - 668 p, ;  11 x 8.6 x 1 inches 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>363.7  / BOT