@INBOOK {EKANAYAKE:1996b, title = {Production and delivery systems of good quality cassava planting materials in sub-Saharan Africa}, author = {Ekanayake, I. J. and Asiedu, R. and Bieler, P. }, year = {1996}, type = {Abstracts, international Meet on Tropical Root Crops (IMOTUC 1996): Food Security and Nutrition,}, note = {RTB; Root and Tuber; Cassava}, }