Columbia subject headings:
Europe--History--1492-1648--Congresses.
Europe--History--1648-1789--Congresses.
Europe--History--1789-1900--Congresses.
Europe--Intellectual life--Congresses.
Harvard subject headings:
Europe--History--1492-1648--Congresses.
Europe--History--1648-1789--Congresses.
Europe--History--1789-1900--Congresses.
Europe--Intellectual life--Congresses.
Princeton subject headings: