Columbia subject headings:
Germany--History--Revolution, 1918.
Germany--Politics and government--1871-1933.
Switzerland--Politics and government--20th century.
World War, 1914-1918--Germany.
Harvard subject headings:
Germany--History--Revolution, 1918.
Germany--Politics and government--1871-1933.
Switzerland--Politics and government--20th century.
World War, 1914-1918--Germany.
Princeton subject headings:
Europe--Politics and government--1871-1918.
Europe--Politics and government--1918-1945.