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Dyfyniad Arddull ChicagoSiegel, Paul, and Jeffrey R. Alwang. Export Commodity Production and Broad-based Rural Development: Coffee and Cocoa in the Dominican Republic. [Washington, D.C: World Bank, 2004.
Dyfyniad MLASiegel, Paul, and Jeffrey R. Alwang. Export Commodity Production and Broad-based Rural Development: Coffee and Cocoa in the Dominican Republic. World Bank, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.