Columbia subject headings:
Italy--Politics and government--1922-1945--Congresses.
Italy--Politics and government--1945-1976--Congresses.
Rossi, Ernesto, 1897-1967--Congresses.
Socialism--Italy--Congresses.
Harvard subject headings:
Anti-fascist movements--Italy--History--Congresses.
Italy--Politics and government--1922-1945--Congresses.
Italy--Politics and government--1945-1976--Congresses.
Rossi, Ernesto, 1897-1967--Congresses.
Socialism--Italy--20th century--Congresses.
Socialism--Italy--History--20th century--Congresses.
Princeton subject headings:
Anti-fascist movements--Italy--History--Congresses.
Italy--Politics and government--1922-1945--Congresses.
Italy--Politics and government--1945-1976--Congresses.
Rossi, Ernesto, 1897-1967--Congresses.
Socialism--Italy--History--20th century--Congresses.