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Azbuka by Ivan Fyodorov. AzbukabyIvanFyodorovv en page from Azbuka the first Ruthenian language textbook Printed by Ivan Fyodorov in The page features the Cyrillic alphabet ru AzbukabyIvanFyodorov UTC AzbukabyIvanFyodorov Ivan Fyodorov derivative work Mikhail Ryazanov talk AzbukabyIvanFyodorov PDold page from Azbuka