Ecoagriculture :   initiatives in Eastern and Southern Africa /  [textbook] 
edited by J.F.Devlin and T.Zettel 
 - Harare :  Weaver Press,  1999 
 - xii. 348 pages :  illustrations ; 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0797420150 
<br/><br/><label>LC Class. No.: </label>S472.A354  / ECO