Smith, Robert Leo <br/><br/>
Elements of ecology / 
Robert Leo Smith 
 - 3rd ed. 
 - New York, N.Y. :  HarperCollins,  c1992 
 - 617 p. :  ill. (some col.) 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0060163287 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGY
<br/><br/><label>LC Class. No.: </label>QH541  / S647E 1992