Columbia subject headings:
Harvard subject headings:
Italy--Politics and government--20th century--Congresses.
Pertini, Alessandro, 1896-1990
Socialism--Italy--Congresses
Princeton subject headings:
Italy--Politics and government--20th century--Congresses.
Pertini, Alessandro, 1896-1990--Congresses.
Politicians--Italy--Biography--Congresses.
Presidents--Italy--Biography--Congresses.