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Paris: OECD, 1998
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Paris: Organisation for Economic Co-operation and Development, 1997
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Paris: OECD, 2002
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Paris: OECD, 1997
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Paris: OECD, 2002
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Paris: OECD, 2004
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Paris: Organisation for Economic Co-operation and Development, 1995
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Paris: OECD Publishing, 2020
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Washington, D.C: The World Bank, 2007 ; Online-Ausg.
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Informa UK Limited, 1993
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SAGE Publications, 1994
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SAGE Publications, 1986
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SAGE Publications, 1977
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SAGE Publications, 1989
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SAGE Publications, 1976
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SAGE Publications, 1985
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SAGE Publications, 1981
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SAGE Publications, 1984
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SAGE Publications, 1980
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Informa UK Limited, 2009