Columbia subject headings:
Christianity--Russia (Federation)--Volga River Region--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Missions--Russia (Federation)--Udmurtii͡a.
Udmurts--Religion.
Harvard subject headings:
Christianity--Russia (Federation)--Volga River Region--History.
Church history.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Missions--Russia (Federation)--Udmurtii͡a.
Udmurts--Religion.
Princeton subject headings:
Christianity--Russia (Federation)--Volga River Region--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Missions--Russia (Federation)--Udmurtii︠a︡.
Udmurts--Religion--History.