Columbia subject headings:
Diplomacy--History.
Europe--Politics and government--1918-1945.
World War, 1914-1918--Diplomatic history.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Europe--Politics and government--1918-1945.
World War, 1914-1918--Diplomatic history
World War, 1939-1945--Diplomatic history.
Princeton subject headings: