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