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Washington, D.C: World Bank, 2009 ; 2009
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Washington, DC: World Bank, 2010 ; 2010
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Washington, D.C: The World Bank, 2006
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Washington, D.C: The World Bank, 2000 ; Online-Ausg.
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[S.l.]: SSRN, [2016]
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[S.l.]: SSRN, [2016]
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[S.l.]: SSRN, [2007]
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Washington, D.C: The World Bank, 2006
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[S.l.]: SSRN, [2002]
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[S.l.]: SSRN, [2003]
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Cambridge, Mass: National Bureau of Economic Research, May 2001
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World Bank, Washington, DC, 2000
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[S.l.]: SSRN, [2021]
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[S.l.]: SSRN, 2004
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World Bank, Washington, DC, 2001
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Universidad Nacional Autonoma de Mexico, 2009
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Informa UK Limited, 2006
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Elsevier BV, 2002
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Elsevier BV, 2001
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Elsevier BV, 2000