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Dyfyniad Arddull ChicagoInternational Food Policy Research Institute, Raisuddin Ahmed, and John Williams Mellor. Agricultural Price Policy for Developing Countries. Baltimore: Johns Hopkins University Press, 1988.
Dyfyniad MLAInternational Food Policy Research Institute, et al. Agricultural Price Policy for Developing Countries. Johns Hopkins University Press, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.