Soil, water and crop production / 
edited by  D. Wynne Thorne and Marlowe D. Thorne. 
 - Westport  AVI Publishing company   1976 
 - ix, 353.:  ill. ;Hbk 
<br/><br/><label>ISBN: </label>0870552813  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology.<br/>Agriculture.<br/>Cropping systems.<br/>Agricultural geography.
<br/><br/><label>LC Class. No.: </label>S589.7.S64  / 1976