Columbia subject headings:
Harvard subject headings:
Church and state--Orthodox Eastern Church--History.
Church and state--Soviet Union
Church and state--Soviet Union--History
Orthodox Eastern Church--Soviet Union--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.
Princeton subject headings:
Religion and state--Soviet Union--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.