Columbia subject headings:
Harvard subject headings:
Church and state--Soviet Union--History--Congresses.
Millennium of Christianity in Kievan Rus, 988-1988--Congresses.
Perestroĭka--Religious aspects--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History--Congresses.
Princeton subject headings:
Church and state--Soviet Union--History--Congresses.
Millennium of Christianity in Kievan Rus, 988-1988--Congresses.
Perestroĭka--Religious aspects--Congresses.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ Congresses.--History