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Kihara, Job ,  Mukalama, J ,  Ayuke, Fredrick O. ,  Njoroge, S ,  Waswa, Boaz S. ,  Okeyo, J. ,  Koala, Saidou ,  Bationo, B. André ,  [Crop and soil response to tillage and crop residue application in a tropical ferralsol in sub-humid western Kenya] ,  Crop and soil response to tillage and crop residue application in a tropical ferralsol in sub-humid western Kenya

Abdou, A ,  Koala, Saidou ,  Bationo, B. André ,  [Long-Term soil fertility trials in Niger, west Africa] ,  Long-Term soil fertility trials in Niger, west Africa