s:246:"TI Spatial variability of soil nutrients in wetland and its influence on rice yield in Rwanda AU Nabahungu, N.L. AU Musana, S.B. AU Kagabo, D.M. AU Cyamweshi, R.A. AU Tuyisenge, J. AU Chuma, A. AU Gahakwa, D. AU Mukuralinda, A. ";