@INBOOK {EKANAYAKE:1999, 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. }, editor = {Balagopalan, C. and Nayar, T. V. R. and Sundaresan, S. and Premakumar, T. and Lakshmi, K. R. }, year = {1999}, type = {Tropical tuber crops: food security and nutrition}, pages = {267--281}, publisher = {Oxford; IBH}, address = {New Delhi, India}, note = {RTB; Root and Tuber; Cassava}, }