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Dyfyniad Arddull ChicagoCollier, Paul. Breaking the Conflict Trap: Civil War and Development Policy. Washington, D.C: World Bank, 2003.
Dyfyniad MLACollier, Paul. Breaking the Conflict Trap: Civil War and Development Policy. World Bank, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.