Columbia subject headings:
Harvard subject headings:
Democracy--Europe--History--20th century.
Democracy--Germany--History--20th century
Democracy--United States--History--20th century.
Europe--Politics and government--1918-1945.
Germany--Politics and government--1918-1933
United States--Politics and government--1919-1933.
Princeton subject headings:
Democracy--Europe--History--20th century.
Democracy--Germany--History--20th century.
Democracy--United States--History--20th century.
Europe--Politics and government--1918-1945.
Germany--Politics and government--1918-1933.
United States--Politics and government--1919-1933.