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  Ambassador Morgenthau's Story - Henry Morgenthau - Google Books

  https://books.google.de/books?id=ENsLAAAAYAAJ

  Keine Beschreibung vorhanden.

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  The Byzantine Commonwealth: Eastern Europe, 500-1453 - Dimitri Obolensky - Google Books

  https://books.google.de/books?id=RlBoAAAAMAAJ

  Provides a comprehensive historical account of the relations--political, diplomatic, ecclesiastical, economic and cultural-- between the Empire and the peoples of Eastern Europe. Shows how there emerged in the early Middle Ages a community of nations which…

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