Columbia subject headings:
Harvard subject headings:
Church and state--Soviet Union--History--Congresses.
Church and state--Ukraine--History--Congresses.
Soviet Union--Church history--Congresses.
Ukraine--Church history--Congresses.
Princeton subject headings:
Church and state--Soviet Union--History--Congresses.
Church and state--Ukraine--History--Congresses.
Soviet Union--Church history--Congresses.
Ukraine--Church history--Congresses.