Columbia subject headings:
Church and state--Soviet Union--History--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Soviet Union--History--Congresses.
Soviet Union--Church history--Congresses.
Harvard subject headings:
Church and state--Russia--History--Congresses.
Church and state--Soviet Union--History--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Soviet Union--History--Congresses.
Soviet Union--Church history--Congresses.
Princeton subject headings:
Church and state--Soviet Union--History--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Soviet Union--History--Congresses.
Soviet Union--Church history--Congresses.