Фракия (фема) (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Фракия (фема)" in Russian language version.

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books.google.com

Nesbitt & Oikonomides, 1991, p. 155. Nesbitt, John W.; Oikonomides, Nicolas (1991), Catalogue of Byzantine Seals at Dumbarton Oaks and in the Fogg Museum of Art, Volume 1: Italy, North of the Balkans, North of the Black Sea, Washington, District of Columbia: Dumbarton Oaks Research Library and Collection, ISBN 0-88402-194-7