Columbia subject headings:
Harvard subject headings:
Europe--History--1945-
World War, 1939-1945--Causes.
World War, 1939-1945--Europe.
World War, 1939-1945--Occupied territories.
World War, 1939-1945--Peace.
Princeton subject headings:
Europe--History--1918-1945.
World politics--1900-1945.