Columbia subject headings:
Communism--Italy--History--20th century.
Fascism--Italy--History--20th century.
Socialism--Italy--History--20th century.
Harvard subject headings:
Communism--Italy--History--20th century
Fascism--Italy--History--20th century
Italy--Politics and government--1914-1945.
Socialism--Italy--20th century.
Socialism--Italy--History--20th century
Princeton subject headings:
Communism--Italy--History--20th century.
Fascism--Italy--History--20th century.
Italy--Politics and government--1914-1945.
Socialism--Italy--History--20th century.