Columbia subject headings:
Harvard subject headings:
Democracy--Europe--Historiography--Congresses.
Europe--Politics and government--1918-1945--Historiography--Congresses.
Europe--Politics and government--1945---Historiography--Congresses.
Historiography--Europe--Congresses.
Historiography--History--20th century--Congresses.
Princeton subject headings:
World politics--1945---Historiography--Congresses.