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Köln: Römer, 1994
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Villingen-Schwenningen: Fachhochschule für Polizei Baden-Württemberg, 1995
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World Bank, Washington, DC, 2012
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World Bank, Washington, DC, 2012
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World Bank, Washington, DC, 2011
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Washington, DC: The World Bank, 2012
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Washington, DC: The World Bank, 2012
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Washington, DC: The World Bank, 2011
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World Bank, Washington, DC, 2016
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World Bank, Washington, DC, 2011
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Washington, DC: The World Bank, 2011
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World Bank, Washington, DC, 2016
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World Bank, Washington, DC, 2016
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World Bank, Washington, DC, 2016
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Springer Science and Business Media LLC, 2005
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Springer Science and Business Media LLC, 1997
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Springer Science and Business Media LLC, 1995
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Washington, D.C: The World Bank, 2016
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Emerald, 1995
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Washington, D.C: The World Bank, 2016