Columbia subject headings:
Harvard subject headings:
Bŭlgarska pravoslavna t︠s︡ŭrkva.
Church and social problems--Bulgaria.
Dvizhenie za khristii︠a︡nstvo i progres "Sv. Ĭoan Predtecha".
Missions to Muslims--Bulgaria.
Sarŭev, Boi︠a︡n.
Sarʺev, Boi͡an.
Princeton subject headings:
Bŭlgarska pravoslavna t︠s︡ŭrkva.
Church and social problems--Bulgaria.
Dvizhenie za khristii︠a︡nstvo i progres "Sv. Ĭoan Predtecha".
Missions to Muslims--Bulgaria.
Sarŭev, Boi︠a︡n.