Columbia subject headings:
Italy--History--1849-1870--Congresses.
Italy--Politics and government--1849-1870--Congresses.
Harvard subject headings:
Italy--History--1849-1870--Congresses.
Italy--Politics and government--1849-1970--Congresses.
Princeton subject headings:
Italy--History--1849-1870--Congresses.
Italy--Politics and government--1849-1870--Congresses.