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Kankwamba, H and Mangisoni, J and Simtowe, F and Mausch, K (2012) Improved legume seed demand systems in central Malawi: what do farmers’ seed expenditures say about their preferences? In: International Association of Agricultural Economists (IAAE) Triennial Conference, 18-24 August, 2012, Foz do Iguacu, Brazil.