Robert S. L. <br/><br/>
Ecology & field biology / 
Robert Leo Smith, Thomas M. Smith ; illustrated by Robert Leo Smith, Jr. 
 - 6th. 
 - San Francisco :  Benjamin Cummings,  2001. 
 - xviii, 771, 18, 31, 4, 19 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0321042905 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Biology--Fieldwork.
<br/><br/><label>LC Class. No.: </label>DUCE QH541.S6  /  2001