@MANUAL {Hanna:2012, title = {New cassava varieties for Cameroon: a technical guide}, author = {Hanna, R. and Njukwe, E. and Amah, D. and Tenkouano, A. and Dixon, A. and Nguekam, A. and Doumtsop, A. R. P. and Ngoko, Z. }, year = {2012}, note = {RTB; Root and Tuber; Cassava; Cassava Agronomy; Learning Material; 15p.}, }