Θεόγνωστος του Κιέβου (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "Θεόγνωστος του Κιέβου" in Greek language version.

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books.google.com

  • Meyendorff, John (1989). Byzantium and the Rise of Russia: a Study of Byzantino-Russian Relations in the Fourteenth Century. St Vladimir's Seminary Press. σελ. 84. ISBN 0-88141-079-9. 

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