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1.
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Strasbourg : Council of Europe, 2007.
V. 2.
English | N 77 COE.T 2007 |
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2.
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Strasbourg, France : European Audiovisual Observatory, c.2008.
German | N 77 TEL 2008 |
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3.
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Strasbourg, France : European Audiovisual Observatory, c.2009.
German | N 77 TEL 2009 |
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4.
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Strasbourg : European Audiovisual Observatory, 2006.
English | N 77 COE.T 2006 |
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5.
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Strasbourg : European Audiovisual Observatory, 2000.
French | N 77 COE.S 2001 |
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