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Düsseldorf: IDW-Verl., 2013
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Lohmar; Köln: Eul, 2015
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[S.l.]: SSRN, 2023
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[S.l.]: SSRN, [2021]
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Amsterdam: International Association for the Evaluation of Educational Achievement (IEA), [2013]
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Cambridge, Mass: National Bureau of Economic Research, 2021
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Mainz, 2018
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World Bank, Washington, DC, 2016
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Cambridge, Mass: National Bureau of Economic Research, September 2023
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Washington, DC, 2014
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World Bank, Washington, DC, 2003
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Washington, D.C: International Monetary Fund, 2022
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Washington, DC, 2014
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Washington, DC, 2014
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World Bank, Washington, DC, 2007
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World Bank, 2010
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Washington, DC, 2014
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World Bank, Washington, DC, 2014
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Washington, DC, 2008
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World Bank, Washington, DC, 2007