Columbia subject headings:
Germany--Politics and government--1789-1900--Congresses.
Italy--Politics and government--1789-1815--Congresses.
Harvard subject headings:
Germany--Politics and government--1789-1900--Congresses
Italy--Politics and government--1789-1815--Congresses.
Princeton subject headings:
Germany--History--1789-1900.
Germany--Politics and government--1789-1900.
Italy--History--1789-1815.
Italy--Politics and government--1789-1815.