Columbia subject headings:
Capitals (Cities)--History--Congresses.
Cities and towns--Italy--History--Congresses.
Italy--History--1789-1815--Congresses.
Italy--History--1815-1870--Congresses.
Harvard subject headings:
Princeton subject headings:
Capitals (Cities)--History--Congresses.
Cities and towns--Italy--History--Congresses.
Italy--History--1789-1815--Congresses.
Italy--History--1815-1870--Congresses.