Smith, Robert Leo. <br/><br/>
Elements of ecology / 
by Robert Leo Smith and Thomas M. Smith. 
 - 4th. ed. 
 - San Francisco, CA :  Benjamin/Cummings Science Publishing,  2000. 
 - xx, 567p. :  col. illus. ;  25cm. 
<br/><br/> Includes references, glossary, credits and index. 
<br/><br/> Young Adult 
<br/><br/>
<br/><br/><label>ISBN: </label>0321042808 
<br/><br/><label>LCCN: </label>9743763 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.
<br/><br/><label>LC Class. No.: </label>QH 541  / S624 2000