Columbia subject headings:
Harvard subject headings:
Europe--History--1848-1871.
Europe--History--1871-1918.
Europe--Politics and government--1848-1871.
Europe--Politics and government--1871-1918.
Italy--Politics and government--1789-1870.
Princeton subject headings:
Europe--History--1848-1871.
Europe--Politics and government--1848-1871.
Europe--Politics and government--1871-1918.
Italy--Politics and government--1789-1870.