Columbia subject headings:
Freedom of religion--Soviet Union--History.
Religion and state--Soviet Union--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History--20th century.
Soviet Union--Church history.
Harvard subject headings:
Freedom of religion--Soviet Union--History.
Religion and state--Soviet Union--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History--20th century.
Soviet Union--Church history.
Princeton subject headings: