@ARTICLE {SCHULTHESS:1997a, title = {Multi-trophic interactions in cassava, Manihot esculenta, cropping systems in the subhumid tropics of West Africa}, author = {Schulthess, F. and Neuenschwander, P. and Goergen, G. }, journal = {Agriculture, Ecosystems and Environment}, year = {1997}, volume = {66}, number = {3}, pages = {211--222}, issn = {0167-8809}, note = {RTB; Root and Tuber; Cassava}, }