Soil, water, and crop production / 
[edited by] D. Wynne Thorne, Marlowe D. Thorne. 
 - Westport, Conn. :  AVI Pub. Co.,  c1979. 
 - ix, 252 p. :  ill. 
<br/><br/><label>ISBN: </label>0870552813 :  $18.00 
<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 
<br/><br/><label>Dewey Class. No.: </label>630/.27/45