Columbia subject headings:
Pius XII, Pope, 1876-1958.
World War, 1939-1945--Italy--Rome.
World War, 1939-1945--Vatican City.
Harvard subject headings:
Pius XII, Pope, 1876-1958.
World War, 1939-1945--Italy--Rome.
World War, 1939-1945--Vatican City.
Princeton subject headings:
Pius XII, Pope, 1876-1958.
World War, 1939-1945--Italy--Rome.
World War, 1939-1945--Vatican City.