@INPROCEEDINGS {NG:1994a, title = {Approaches for yam germplasm conservation}, author = {Ng, N. Q. and Ng, S. Y. C. }, editor = {Akoroda, M. }, booktitle = {In: Food crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-African Branch, 22-28 November 1992, Kampala, Uganda}, year = {1994}, pages = {135--140}, publisher = {ISBN: 978-2079-00-2; ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA)}, address = {Kampala, Uganda}, note = {RTB; Root and Tuber; Yam}, }