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