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Ashby, J.A. ,  Pachico, Douglas H. ,  [Farmer evaluations of technology: a handbook] ,  Farmer evaluations of technology: a handbook

Pachico, Douglas H. ,  Thrupp, L.A. ,  Vosti, SE ,  [Guidelines & methodologies for socioeconomic & policy analysis: "Site characterization" in the "S & B" project] ,  Guidelines & methodologies for socioeconomic & policy analysis: "Site characterization" in the "S & B" project