Columbia subject headings:
Europe--History--1517-1648--Congresses.
Europe--History--1648-1789--Congresses.
Europe--Politics and government--Congresses.
Harvard subject headings:
Europe--History--1517-1648--Congresses.
Europe--History--1648-1789--Congresses.
Europe--Languages--Congresses.
Europe--Politics and government--Congresses.
Language policy--Europe--Congresses.
Nationalism--Europe--Congresses
Princeton subject headings:
Europe--History--1517-1648--Congresses.
Europe--History--1648-1789--Congresses.
Europe--Politics and government--History--Congresses.