Poulton, Colin. <br/><br/>
Increasing Fertilizer use in Africa: What have we learned 

 - Washinton DC World Bank. 2006. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizer- Agricultural economics
<br/><br/><label>Dewey Class. No.: </label>338.162 POU