Smith, Robert Leo <br/><br/>
Elements of ecology and field biology / 
Robert Leo Smith 
 - New York :  Harper & Row,  1977 
 - xii, 497 p. :  ill. ;  25 cm. 
<br/><br/>Includes Bibliographical references and indexes (p.459-488) 
<br/><br/><label>ISBN: </label>0060463287 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology