@INBOOK {WYDRA:2001, title = {Effect of cassava bacterial blight on cassava root yield in different ecozones and influence of the environment on sympton development}, author = {Wydra, K. and Fanou, A. * and Dixon, A. and Rudolph, K. }, year = {2001}, type = {Akoroda M, Ngeve J. eds. Root crops in the 21st century: proceeding of the Seventh Triennial Symposium of the International Society for Tropical Root Crops (ISTRC) - Africa Branch; Oct 1998. Government of Benin}, pages = {562--569}, note = {RTB; Root and Tuber; Cassava}, }