Columbia subject headings:
Catholic Church--Foreign relations--Poland.
Catholic Church--Poland.
Church and state--Germany (East)
Church and state--Poland.
Germany (East)--Politics and government.
Poland--Foreign relations--Catholic Church.
Poland--Politics and government.
Harvard subject headings:
Catholic Church--Foreign relations--Europe, Eastern--Congresses.
Communism and Christianity--Catholic Church--Europe, Eastern--Congresses.
Communism and Christianity--Europe, Eastern--Catholic Church--Congresses.
Europe, Eastern--Foreign relations--Catholic Church--Congresses.
Princeton subject headings: