@BOOK {CARTER:1997, title = {Introduction and diffusion of cassava in Africa: IITA research guide, No. 49}, author = {Carter, S. and Fresco, L. and Jones, P. and Fairbairn, J. N. }, series = {IITA research guide, No. 49}, year = {1997}, month = {July}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, isbn = {978-131-116-9}, note = {RTB; Root and Tuber; Cassava.; 33p.}, }