Columbia subject headings:
Archives--Italy--History--20th century--Congresses.
Libraries--Italy--History--20th century--Congresses.
Harvard subject headings:
Archives--Italy--History--20th century--Congresses.
Libraries--Italy--History--20th century--Congresses.
World War, 1939-1945--Libraries--Congresses.
Princeton subject headings:
Archives--Italy--History--20th century--Congresses.
Libraries--Italy--History--20th century--Congresses.
World War, 1939-1945--Libraries--Congresses.