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Wortmann, Charles S. ,  Fischler, MA ,  Alifugani, F ,  Kaizzi, CK ,  [Accomplishments of participatory research for systems improvement in Iganga District, Uganda 1993 to 1997] ,  Accomplishments of participatory research for systems improvement in Iganga District, Uganda 1993 to 1997

Wortmann, Charles S. ,  Eledu, CS ,  [An agroecological zonation for Uganda: methodology and spatial information] ,  An agroecological zonation for Uganda: methodology and spatial information

Wortmann, Charles S. ,  Allen, David J. ,  [African bean production environments: their definition, characteristics and constraints] ,  African bean production environments: their definition, characteristics and constraints

Wortmann, Charles S. ,  Bosch, CH ,  Mukandala, L ,  [The banana-bean intercropping system in Kagera region of Tanzania : results of a diagnostic survey] ,  The banana-bean intercropping system in Kagera region of Tanzania : results of a diagnostic survey

David, S. ,  Kasozi, S ,  Wortmann, Charles S. ,  [An investigation of alternative bean seed marketing channels in Uganda] ,  An investigation of alternative bean seed marketing channels in Uganda

Wortmann, Charles S. ,  [Assessment of yield loss caused by biotic stress on beans in Africa] ,  Assessment of yield loss caused by biotic stress on beans in Africa