Smith, Robert Leo <br/><br/>
Ecology and field biology 
Robert Leo Smith 
 - 3rd ed. 
 - New York :  Harper & Row,  1980 
 - 835 p. :  ill. ;  27 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0060463295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Biology--Field work