Townsend,Colin R <br/><br/>
Essentials of Ecology / 
Townsend,Colin R. 
 - 2nd ed 
 - Oxford:  Blackwell publishing,  2003. 
 - xiii,530p;26cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>1405149337 
<br/><br/><label>Dewey Class. No.: </label>577 TOW