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Dyfyniad Arddull ChicagoRoy, K. C., and Cal Clark. Technological Change and Rural Development in Poor Countries: Neglected Issues. Calcutta ; New York: Oxford University Press, 1994.
Dyfyniad MLARoy, K. C., and Cal Clark. Technological Change and Rural Development in Poor Countries: Neglected Issues. Oxford University Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.