@INBOOK {NG:1992e, title = {Tissue culture in disease elimination and micropropagation}, author = {Ng, S. Y. C. }, year = {1992}, type = {Biotechnology: enhancing research on tropical crops in Africa, edited by G. Thottappilly, L.M. Monti, D.R. Mohan Raji, and A.W. Moore}, pages = {171--182}, publisher = {CTA; International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, }