@ARTICLE {HERREN:1981c, title = {Biological control of the cassava mealybug and green spider mite with emphasis on the front of the release strategy}, author = {Lema, K. and Herren, H. R. }, journal = {Paper presented at the Symposium on root and tuber crops. Kigali, November, 1980}, year = {1981}, note = {RTB; Root and Tuber; Cassava}, }