Βλαδίμηρος της Βουλγαρίας (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "Βλαδίμηρος της Βουλγαρίας" in Greek language version.

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1books.google.com

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books.google.com

Fine 1991, σελ. 141. Fine, John Van Antwerp (1991) [1983]. The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century (στα Αγγλικά). Ανν Άρμπορ, Μίσιγκαν: University of Michigan Press. ISBN 0-472-08149-7.