Townsend, Colin R. <br/><br/>
Essentials of ecology / 
Colin R. Townsend, John L. Harper, and Michael Begon ; with assistance from Leigh Vanderklein ; special assistance provided by Douglas Reed. 
 - Massachusetts :  Blackwell Science,  2000. 
 - xviii, 552 p. :  col. ill. ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0632043482 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.