@PROCEEDINGS {TERRY:1981, title = {The productivity of improved cassava varieties under cassava mosaic disease stress}, author = {Terry, E. R. }, booktitle = {Paper presented at the 11th Annual Conference of the Nigerian Society for Plant Protection, University of Nigeria, Nsukka, 16-18 February 1981}, year = {1981}, note = {RTB; Root and Tuber; Cassava}, }