Columbia subject headings:
Harvard subject headings:
Calosso, Umberto, 1895-1959--Congresses.
Italy--Politics and government--20th century--Congresses.
Journalists--Italy--Biography--Congresses.
Legislators--Italy--Biography--Congresses.
Socialists--Italy--Biography--Congresses.
Princeton subject headings:
Calosso, Umberto, 1895-1959--Congresses.
Italy--Politics and government--20th century--Congresses.
Socialism--Italy--History--Congresses.
Socialists--Italy--Biography--Congresses.
Socialists--Italy--Congresses.