Columbia subject headings:
Harvard subject headings:
Dictators.
Germany--Politics and government--1933-1945.
Italy--Politics and government--1922-1945.
Soviet Union--Politics and government--1917-1936.
United States--Politics and government--1933-1945.
Princeton subject headings:
Dictators.
Germany--Politics and government--1933-1945.
Italy--Politics and government--1922-1945.
Soviet Union--Politics and government--1917-1936.
United States--Politics and government--1933-.