@ARTICLE {LEGG:1998b, title = {Survey of cassava virus diseases in Tanzania}, author = {Legg, J. and Raya, M. }, journal = {International Journal of Pest Management}, year = {1998}, volume = {44}, number = {1}, pages = {17--23}, issn = {0967-0874}, note = {RTB; Root and Tuber; Cassava}, }