Soil Fertility Research For Maize Based Farming Systems In Malawi And Zimbabwe Proceedings Of The The Soil Fertility Network Results And Planning Workshop Mutare Zimbabwe 7 11 July 1997 

 -  Harare : Cimmty 1998. 
 - 312 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>9706480064 (Pbk)