Integrated soil fertility management in cassava-legume systems - Pypers, Pieter; Sanginga, J.M.; Bishikwabo, K.; Mapatano, S.; Chifizi, A.; Walungululu, M.; Munyahali, W.; Bashagaluke, Janvier; Tata-Hangy, W.K.; Mbikayi, N.T.; Vanlauwe, Bernard (International Center for Tropical Agriculture, 2009)