Columbia subject headings:
Communism and Christianity--Catholic Church--Europe, Eastern.
Harvard subject headings:
Catholic Church--Europe, Eastern--History--20th century.
Catholic Church--Foreign relations--Communist countries.
Catholic Church--History--20th century.
Church and state--Europe, Eastern--History--20th century.
Communism and Christianity--Catholic Church--Europe, Eastern.
Communism and Christianity--Catholic Church--History.
Communist countries--Church history.
Communist countries--Foreign relations--Catholic Church.
Europe, Eastern--Church history--20th century.
Europe, Eastern--Religion--20th century.
John Paul II, Pope, 1920-2005
Princeton subject headings:
Catholic Church--Foreign relations--Communist countries--History.
Catholic Church--History--20th century.
Communism and Christianity--Catholic Church--Communist countries--History.
Communist countries--Church history.
Communist countries--Foreign relations--Catholic Church--History.
John Paul II, Pope, 1920-2005.