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Okike, I. ,  Kristjanson, Patricia M. ,  Tarawali, Shirley A. ,  Singh B.B ,  Kruska, R.L. ,  Manyong, Victor M. ,  [An evaluation of potential adoption and diffusion of improved cowpea in the dry savannas of Nigeria: A combination of participatory and structured approaches] ,  An evaluation of potential adoption and diffusion of improved cowpea in the dry savannas of Nigeria: A combination of participatory and structured approaches

Kristjanson, Patricia M. ,  Thornton, Philip K. ,  [Methodological challenges in evaluating impact of crop-livestock interventions] ,  Methodological challenges in evaluating impact of crop-livestock interventions