@INBOOK {NG:2002, title = {Cassava genetic resources and conservation}, author = {Ng, N. Q. and Ng, S. Y. C. }, editor = {Hillocks, R. J. and Thresh, J. M. and Bellotti, A}, year = {2002}, type = {Cassava: biology, production and utilization}, pages = {167--177}, publisher = {Wallingford, UK: CABI}, }