Columbia subject headings:
Catholic Church--Foreign relations--Poland.
Catholic Church--Poland--History--20th century.
Poland--Church history--20th century.
Poland--Foreign relations--1918-1945.
Poland--Foreign relations--1945-1989.
Poland--Foreign relations--Catholic Church.
Harvard subject headings:
Catholic Church--Foreign relations--Poland.
Catholic Church--Poland--History--20th century.
Poland--Church history--20th century
Poland--Foreign relations--1918-1945
Poland--Foreign relations--1945-1989
Poland--Foreign relations--Catholic Church
Princeton subject headings:
Catholic Church--Foreign relations--Poland.
Poland--Foreign relations--Catholic Church.