Food security and crop diversification in SADC countries :  the role of cassava and sweetpotato / 
edited by M. O. Akoroda and J. M. Teri. 
 - 1st  ed. 
 - Lusaka :  IITA,  1998. 
 - 476  p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cassava--Congresses--Africa, Sub-Saharan.<br/>Sweet potatoes--Congresses.--Africa, Sub-Saharan.