Columbia subject headings:
Communism--Italy--History--20th century.
Italy--Politics and government--1945-1976.
Socialism--Italy--History--20th century.
Harvard subject headings:
Communism--Italy--History--20th century
Italy--Politics and government--1945-1976.
Socialism--Italy--History--20th century
Princeton subject headings:
Communism--Italy--History--20th century.
Italy--Politics and government--1945-.
Socialism--Italy--History--20th century.