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Agricultural mechanization and the evolution of farming systems in Sub-Saharan Africa
Pingali, Prabhu L., (1987)
Is research on marginal lands catching up? The case of unfavourable wheat growing environments*
Lantican, M.A., (2003)
Do individual and program factors matter in the utilization of maternal care services in rural India? A theoretical approach
Sunil, T.S., (2006)