Erkossa, T., & Teklewold, H. (2009). Agronomic and economic efficiency of manure and urea fertilizers use on vertisols in Ethiopian highlands. Elsevier.
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Cita Chicago Style (17a ed.)
Erkossa, Teklu, y H. Teklewold. Agronomic and Economic Efficiency of Manure and Urea Fertilizers Use on Vertisols in Ethiopian Highlands. Elsevier, 2009.
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Cita MLA (9a ed.)
Erkossa, Teklu, y H. Teklewold. Agronomic and Economic Efficiency of Manure and Urea Fertilizers Use on Vertisols in Ethiopian Highlands. Elsevier, 2009.
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