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Dyfyniad Arddull ChicagoRavallion, Martin. Looking Beyond Averages in the Trade and Poverty Debate. Washington, D.C: World Bank, 2004.
Dyfyniad MLARavallion, Martin. Looking Beyond Averages in the Trade and Poverty Debate. World Bank, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.