Agricultural ecosystems :  unifying concepts / 
edited by Richard Lowrance, Benjamin R. Stinner and Garfield J. House 
 - New York :  John Wiley & Sons,  1984 
 - 233 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>04718788X 
<br/><br/><label>LCCN: </label>83-23504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology