Biological control:A sustainable solution to crop pest problems in Africa  
J.S,Yeininek, H.R,Herren 
 - Cotonou   IITA  1989 
 - xii,210p;ill  Pbk  
<br/><br/><label>ISBN: </label>9781310391 
<br/><br/><label>LC Class. No.: </label>SB608.B5 1989