@PROCEEDINGS {EZUMAH:1978, title = {Some Notes on the Mealybug. P. manihoti Incidence on Manior (Manihot essulental) in Bas Zaire}, author = {Ezumah, H. C. and Knight, A. }, booktitle = {Proc. Int. Workshop on the Cassava Mealybug. p.7 - 14. 1978}, year = {1978}, }