Smith, Robert Leo. <br/><br/>
Elements of ecology / 
Robert Leo Smith, Thomas M. Smith. 
 - 4th ed. 
 - Menlo Park, Calif. :  Benjamin Cummings,  c1998. 
 - xix, 555 p. :  ill. (some col.), col. maps ; 
<br/><br/><label>ISBN: </label>0321015185 9780321015181 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.
<br/><br/><label>LC Class. No.: </label>QH541  / .S624 1998 
<br/><br/><label>Dewey Class. No.: </label>577