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Published: London [u.a.] : Cass, 1997.
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Published: Frankfurt am Main : Haag + Herchen, 1992.
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Published: Bonn : Referat "Öffentlichkeitsarbeit gegen Terrorismus" im Bundesministerium des Innern, 1982.
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Published: Frankfurt am Main : Diesterweg, 1993.
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Published: Tübingen : Hohenrain, 1999.
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