Field crop ecosystems / 
edited by, C.J. Pearson. 
 - Amsterdam ;  New York :  Elsevier,  1992. 
 - xiii, 576 p. :  ill. (some col.), maps ; 
<br/><br/><label>ISBN: </label>0444886753 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops.<br/>Field crops<br/>Cropping systems.
<br/><br/><label>LC Class. No.: </label>SB185  / .F54 1992