Columbia subject headings:
Harvard subject headings:
Europe--History--1918-1945--Congresses.
World War, 1939-1945--Causes--Congresses.
World War, 1939-1945--Historiography--Congresses.
Princeton subject headings:
Europe--History--1918-1945--Congresses.
World War, 1939-1945--Causes--Congresses.
World War, 1939-1945--Historiography--Congresses.