Columbia subject headings:
Harvard subject headings:
Orthodox Eastern Church--Russia--History.
Russia--Church history.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.
Princeton subject headings:
Orthodox Eastern Church--Russia--History.
Russia--Church history.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.