Hillhorst Thea <br/><br/>
Nutrients on the more:soil fertility dynamics in African farming systems 

 - London  International Institute for Environment  2000 
 - vi,146p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil fertility
<br/><br/><label>LC Class. No.: </label>EAF S599.4.A35