Decision support tools for smallholder agriculture in Sub-Saharan Af rica :  a practical guide / 
T.E. Struif Bontkes and M.C.S. Woperei s, (editors). 
 - Wageningen, Netherlands :  CTA,  2003 
 - ix, 194 p. :  ill. (some col.) ;  22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>088090142X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil fertility<br/>Fertilizers-- Africa, Sub-Saharan.<br/>Soil management
<br/><br/><label>Dewey Class. No.: </label>631.4