Columbia subject headings:
Ireland--History--19th century.
Italy--History--1815-1870.
Nationalism--Ireland--History--19th century.
Nationalism--Italy--History--19th century.
Harvard subject headings:
Italy--History--1815-1870.
Nationalism--Ireland--History--19th century
Nationalism--Italy--History--19th century.
Princeton subject headings:
Italy--History--1815-1870.
Nationalism--Ireland--History--19th century.
Nationalism--Italy--History--19th century.