Loomis, R. S <br/><br/>
Crop ecology : productivity and management in agricultural systems 
R.S. Loomis, D.J. Connor 
 - Cambridge  Cambridge University Press  1992 
 - xiv, 538 p. : ill. ; 26 cm 
<br/><br/> Includes bibliographical references (p. 493-514) and index 
<br/><br/><label>ISBN: </label>9780521387767 
<br/><br/><label>ISSN: </label>91029201 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology<br/>Agricultural systems
<br/><br/><label>Dewey Class. No.: </label>631 LOO