@INBOOK {THOTTAPPILLY:1988, title = {Virus diseases of sweet potato in Nigeria}, author = {Thottappilly, G. and Rossel, H. W. }, year = {1988}, type = {Report of the UNDP/CIAT/CIP/IITA Workshop on sweet potato improvement in Africa 28 Sept. - 2 Oct. 1987}, pages = {53--64}, publisher = {UNDP; CIAT; CIP; International Institute of Tropical Agriculture (IITA)}, address = {Nairobi, Kenya}, note = {RTB; Root and Tuber; Sweetpotato}, }