Casey,Frank Donovan,Graeme <br/><br/>
Soil Fertility Management in Sub -Saharan Africa / Graeme Donovan and Frank Casey 

 - Washington,D.C  World Bank  1998 
 - 60p. 
 - World Bank Technical Paper .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil Fertility - Africa<br/>Soil Science