Columbia subject headings:
Europe, Central--Church history--20th century--Congresses.
Europe, Eastern--Church history--20th century--Congresses.
Post-communism--Europe, Central--Congresses.
Post-communism--Europe, Eastern--Congresses.
Harvard subject headings:
Church and state--Europe, Central--History--Congresses.
Church and state--Europe, Eastern--History--Congresses.
Europe, Central--Church history--20th century--Congresses.
Europe, Eastern--Politics and government--20th century--Congresses.
Post-communism--Europe, Central--History--Congresses.
Princeton subject headings: