@ARTICLE {HERREN:H.R 1983a,
title = {The Africa-wide biological control programme of cassava mealybug and green spider mites: achivements and control strategies},
author = {Herren, H. R. },
journal = {Paper presented at USAID Regional Meeting 7-11 December 1983,Harare, Zimbabwe},
year = {1983a},
pages = {7--11},
note = {RTB; Root and Tuber; Cassava},
}