Columbia subject headings:
Christianity--Russia (Federation)--Volga River Region--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.
Volga River Region (Russia)--History.
Harvard subject headings:
Christianity--Russia (Federation)--Volga River Region--History.
Church history.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.
Volga River Region (Russia)--History.
Princeton subject headings:
Christianity--Russia (Federation)--Volga River Region--History.
Church and state--Russia (Federation)--Volga River Region--History.
Volga River Region (Russia)--Church history.