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