Columbia subject headings:
Italy--Politics and government--1945-1976.
Partito socialista italiano--History.
Socialism--Italy--History.
Harvard subject headings:
Italy--Politics and government--1945-
Italy--Politics and government--1945-1976.
Italy--Politics and government--1976-1994.
Partito socialista italiano--History.
Socialism--Italy
Socialism--Italy--History
Princeton subject headings: