@PROCEEDINGS {CAVENESS:1983a, title = {Description of crops: sweet potato, yam and cocoyam}, author = {Caveness, F. E. and Hahn, S. K. and Alvarez, M. N. }, booktitle = {Paper presented at the Global Workshop on Root and Tuber Crops Propagation, p. 12-16,}, year = {1983}, note = {RTB; Root and Tuber}, }