Columbia subject headings:
Harvard subject headings:
Civilization, Modern--19th century
Civilization, Modern--20th century
Italy--Civilization--1789-1900.
Italy--Civilization--20th century.
Princeton subject headings:
Ferrero, Guglielmo, 1871-1942--Political and social views.
Italy--Politics and government--1870-1914.
Italy--Politics and government--1914-1945.