@BOOK {NWEKE:1990a, title = {Status of data on cassava in major producing countries of Africa: Cameroon, Cote d' lvoire, Ghana, Nigeria, Tanzania, Uganda, and Zaire}, author = {Nweke, F. and Lynam, J. * and Prudencio, C. Y. }, series = {COSCA working paper}, year = {1990}, number = {3}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {RTB; Root and Tuber; Cassava.; 35p.}, }