Columbia subject headings:
Europe--Politics and government--20th century.
Germany--History.
Germany--Politics and government--20th century.
World War, 1914-1918--Germany.
Harvard subject headings:
Europe--Politics and government--20th century.
Germany--History.
Germany--Politics and government--20th century
World War, 1914-1918--Germany.
World War, 1939-1945--Germany.
Princeton subject headings:
Germany--History.
Germany--Politics and government--20th century.
World War, 1914-1918--Germany.