The World Bank. (2002). Operation evaluation department (OED): First 30 years. Washington, D.C: The World Bank.
Παραπομπή Chicago StyleThe World Bank. Operation Evaluation Department (OED): First 30 Years. Washington, D.C: The World Bank, 2002.
Παραπομπή MLAThe World Bank. Operation Evaluation Department (OED): First 30 Years. Washington, D.C: The World Bank, 2002.
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