Columbia subject headings:
Harvard subject headings:
Occhialini, Giuseppe, 1907-1993--Congresses.
Osservatorio astrofisico di Arcetri--Congresses.
Physics--Italy--Arcetri--History--Congresses.
Physics--Italy--History--20th century--Congresses.
Space sciences--Europe--Congresses.
Space sciences--Europe--History--Congresses.
Princeton subject headings:
Physics--Italy--Arcetri--History--Congresses.
Physics--Italy--History--20th century--Congresses.
Space sciences--Europe--Congresses.