Columbia subject headings:
Harvard subject headings:
Caucasus--Church history.
Princeton subject headings:
Christianity--Russia (Federation)--Caucasus, Northern.
Missions--Russia (Federation)--Caucasus, Northern--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Missions--Russia (Federation)--Caucasus, Northern.