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Ouedraogo, I and Newman, M D and Norman, D W (1982) The farmer in the semi-arid tropics of West Africa: a partially annotated bibliography. Documentation. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Andhra Pradesh, India.
Norman, D W and Newman, M D and Ouedraogo, I (1981) Farm and village production systems in the semi-arid tropics of West Africa: An interpretive review of research. Monograph. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Andhra Pradesh, India.