N. Bekele

Assessment of Soil Organic Matter under Four Land Use Systems in the Major Soils of Bale Highlands, South East Ethiopia b. Factors Affecting Soil Organic Matter Distribution

I. Tadesse, T. Bekele, Balo, 2013 .

System prototyping and impact assessment for sustainable alternatives in mixed farming systems in high potential areas of eastern Africa

Keith D. Shepherd, Philip K. Thornton, Mario Herrero, 2005 .