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Astatke, A. ,  Mohamed-Saleem, M.A. ,  [Low cost animal drawn implements for better utilization of Vertisols in the Ethiopian highlands] ,  Low cost animal drawn implements for better utilization of Vertisols in the Ethiopian highlands

Astatke, A. ,  Jutzi, S.C. ,  Grunder, M. ,  [Vertisol surface drainage and effects on soil and nutrient conservation, excess water disposal and wheat growth at Debre Zeit] ,  Vertisol surface drainage and effects on soil and nutrient conservation, excess water disposal and wheat growth at Debre Zeit

Jutzi, S.C. ,  Asamenew, G. ,  Tedla, A. ,  Astatke, A. ,  [Intermediate technology for increased food and feed production from deep black clay soils in the Ethiopian highlands] ,  Intermediate technology for increased food and feed production from deep black clay soils in the Ethiopian highlands