Columbia subject headings:
Communism--Italy.
Italy--Politics and government--1945-1976.
Partito comunista italiano.
Partito socialista italiano.
Socialism--Italy.
Harvard subject headings:
Communism--Italy
Italy--Politics and government--1945-
Partito comunista italiano
Partito socialista italiano.
Socialism--Italy
Princeton subject headings:
Communism--Italy.
Italy--Politics and government--20th century.
Partito comunista italiano.
Partito socialista italiano.
Socialism--Italy.