Columbia subject headings:
Catholic Church--Foreign relations--Germany.
Fascism and the Catholic Church.
Germany--Foreign relations--Catholic Church.
Jews.
Pius XI, Pope, 1857-1939.
Pius XII, Pope, 1876-1958.
World War, 1939-1945--Religious aspects--Catholic Church.
Harvard subject headings:
Catholic Church--Foreign relations--Germany.
Germany--Foreign relations--Catholic Church.
Holocaust, Jewish (1939-1945)--Causes
Princeton subject headings: