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Fertilizer use on smallholder farms in Eastern Province, Zambia por Jha, Dayanatha, Hojjati, Behjat

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Farm-level effects of soil degradation in Sharda Sahayak irrigation project por Joshi, Pramod Kumar, Jha, Dayanatha

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Technological change, production costs, and supply response por Jha, Dayanatha, Delgado, Christopher L., Ranade, Chandrashekhar G.

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Strengthening agricultural research in Africa: some neglected issues por Jha, Dayanatha

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