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New Haven [u.a.]: Yale Univ. Press, 1987
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Dordrecht [u.a.]: Nijhoff, 1988
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Dordrecht [u.a.]: Nijhoff, 1987
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Regensburg: Pustet, 1976
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Washington, DC: American Enterprise Institute for Public Policy Research, c1988
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Geneva, Switzerland: International Organization for Migration, 2009
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Hamburg: Hamburg Institute of International Economics, 2010 ; Online-Ausg.
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[Brussels]: ecre, European Council on Refugees and Exiles, 2020
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Paris: OECD Publishing, 2009
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München: ifo, Institut für Wirtschaftsforschung, [2001]