Columbia subject headings:
Harvard subject headings:
Congress of Vienna (1814-1815)--Congresses.
Europe--Politics and government--19th century--Congresses.
Europe--Politics and government--20th century--Congresses.
Peace
Princeton subject headings:
Congress of Vienna (1814-1815)--Congresses.
Europe--History--1789-1900--Congresses.
Europe--History--20th century--Congresses.
Peace--Congresses.