Principles of ecology in plant production / 
edited by T.R.  Sinclair and F.P. Gardner. 
 - Wallingford, UK :  CAB International,  c1998. 
 - x, 189 p. :  ill., maps ;  25 cm. 
<br/><br/>Includes bibligraphical references and index. 
<br/><br/><label>ISBN: </label>085199220X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops--Ecology.
<br/><br/><label>LC Class. No.: </label>SB91  / P75 1998