Columbia subject headings:
Research--Italy--History--20th century--Congresses.
Science and state--Italy--History--20th century--Congresses.
Science--Italy--History--20th century--Congresses.
Harvard subject headings:
Colombo, Umberto, 1927-
Research--Italy--History--20th century--Congresses.
Science and state--Italy--History--20th century--Congresses.
Science--Italy--History--20th century--Congresses.
Princeton subject headings:
Colombo, Umberto, 1927-
Research--Italy--History--20th century--Congresses.
Science and state--Italy--History--20th century--Congresses.
Science--Italy--History--20th century--Congresses.