Smith, Robert Leo <br/><br/>
Ecology and field biology / 
by Robert LeoSmith, illustrated by Ned Smith 
 - New York :  Harper & Row,  1966 
 - xiv, 686 p. :  ill., maps ;  26 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology