Columbia subject headings:
Harvard subject headings:
Italy--Politics and government--1870-1914.
Italy--Politics and government--1914-1945.
Socialism--Italy
Socialism--Italy--History
Princeton subject headings:
Bignami, Enrico, 1844-1921.
Italy--Politics and government--1849-1870.
Italy--Politics and government--1870-
Labor movement--Italy--History.
Liberalism--Italy--History.
Rosselli, Carlo, 1899-1937.
Socialism--Italy--History.