Columbia subject headings:
Catholic Church--Foreign relations--Germany.
Germany--Foreign relations--Catholic Church.
Italy--History--German occupation, 1943-1945.
World War, 1939-1945--Italy.
Harvard subject headings:
Catholic Church--Foreign relations--Germany.
Germany--Foreign relations--Catholic Church.
Italy--History--German occupation, 1943-1945.
World War, 1939-1945--Italy.
Princeton subject headings:
Germany--Foreign relations--Papal States--1943-1945.
Italy--History--German occupation, 1943-1945.
Papal States--Foreign relations--Germany--1943-1945.
World War, 1939-1945--Vatican City.