Columbia subject headings:
Europe--Politics and government--1918-1945.
Europe--Politics and government--1945-
Middle class--Europe--History.
World War, 1914-1918--Influence.
Harvard subject headings:
Europe--Politics and government--1918-1945.
Europe--Politics and government--1945-
Middle class--Europe--History.
World War, 1914-1918--Influence
Princeton subject headings:
Europe--Politics and government--1918-1945.
Europe--Politics and government--1945-
Middle class--Europe--History.
World War, 1914-1918--Influence.