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Dyfyniad Arddull ChicagoWORLD BANK. GLOBAL ECONOMIC PROSPECTS AND THE DEVELOPING COUNTRIES. WASHINGTON: INTERNATIONAL BANK, 2002.
Dyfyniad MLAWORLD BANK. GLOBAL ECONOMIC PROSPECTS AND THE DEVELOPING COUNTRIES. INTERNATIONAL BANK, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.