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Pittsburgh, Pa.: University of Pittsburgh Press, 2008
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Princeton, N.J.: Princeton University Press, 2008 ; 2008
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Washington, D.C: World Bank, c2005 ; Online-Ausg.
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New York, NY: Oxford University Press, [2019]
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Washington, D.C: World Bank, c2003 ; Online-Ausg.
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New York, NY: Oxford University Press, 2021