Soil, water, and crop production / 
Edited by D. Wynne Thorne and Marlowe D. Thorne. 
 - Westport, Conn. :  Avi Pub. Co.,  1979 
 - ix, 252 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and indexes 
<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.