Title: Zagadkite okolo etnicheskii︠a︡ proizkhod na solunskite brati︠a︡ ili na koe pleme sobstveno prinadlezhat svett︠s︡ite  Kiril i Metodiĭ
Subjects: Ethnology
Places: Balkan Peninsula
People: Cyril Saint, Apostle of the Slavs (ca. 827-869), Methodius Saint, Apostle of the Slavs (ca. 825-884 or 5)