Integrated plant nutrient management  in sub-Saharan Africa :  from concept to practice / 
edited by B. Vanlauwe ...[et al.]. 
 - Oxon, OX :  CABI Publishing,  2001. 
 - xiv, 352 p. ;  24 cm, 
<br/><br/>Includes indexes (p. 339-352) 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0851995764 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil fertility--African, Sub-Saharan.<br/>Fertilizer--Africa, Sub-Saharan.<br/>Crops--Africa, Sub-Saharan--Nutrition.<br/>Plant nutrients--Africa, Sub-Saharan.