@ARTICLE {MODDER:1994, title = {Control of the variegated grasshopper Zonocerus variegatus (L.) on cassava}, author = {Modder, W. }, journal = {African Crop Science Journal}, year = {1994}, volume = {2}, number = {4}, pages = {391--406}, issn = {1021-9730}, note = {RTB; Root and Tuber; Cassava}, }