@PROCEEDINGS {WILSON:1978d, title = {Progress in the Breeding of Yam Dioscorea spp.}, author = {Wilson, J. E. }, booktitle = {Paper presented at the International Seminar on Yams. October 1 - 7, 1978}, year = {1978}, month = {October}, address = {Buea, Cameroon}, note = {RTB; Root and Tuber; Yam}, }