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1.
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Washington, D.C. : World Bank, c2001.
English | N 637 CUL |
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2.
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Washington, D.C. : World Bank, c1990.
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3.
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Washington, D.C. : World Bank, c1987.
Second rev.,expand.
English | A 41(111:113) GOR.T |
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4.
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Washington, D.C., U.S.A. : World Bank, c1991.
Third edition.
English | A 4(111:113) WOR VOL 1 |
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5.
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New York : World Bank and Oxford University Press, c2004.
27th.
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