@PROCEEDINGS {AKORODA:1987, title = {Harvest index of food yams and its implications for the improvement of tuber yield}, booktitle = {In: Tropical Root Crops: Root Crops and the African Food Crisis; Proceedings of the Third Triennial Symposium of the International Society of Tropical Root Crops - Africa Branch}, year = {1987}, publisher = {IDRC}, organization = {IDRC}, address = {Ottawa}, note = {RTB; Root and Tuber; Yam}, }