Jager, Andre de. , <br/><br/>
Practice makes perfect :  participatory innovation in soil fertility management to improve rural livelihoods in East Africa / 
by Andre de Jager. 
 - Netherlands :  Andre de Jager ;  c2007. 
 - 218p. ,  illustrations ;  24 cm. 
<br/><br/><label>ISBN: </label>9789085048428 
<br/><br/><label>Subjects--Personal Names: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>soil fertility management
<br/><br/><label>Dewey Class. No.: </label>631.422