Columbia subject headings:
Germany--History--1918-1933.
Germany--Politics and government--1918-1933.
Spain--History--Republic, 1931-1939.
Spain--Politics and government--1931-1939.
Harvard subject headings:
Germany--History--1918-1933.
Germany--Politics and government--1918-1933
Spain--History--Republic, 1931-1939.
Spain--Politics and government--1931-1939.
Princeton subject headings:
Germany--History--1918-1933.
Germany--Politics and government--1918-1933.
Spain--History--Republic, 1931-1939.
Spain--Politics and government--1931-1939.