Columbia subject headings:
Spain--Politics and government--1939-1975.
Spain--Politics and government--1975-1982.
Spain--Politics and government--1982-
Harvard subject headings:
Spain--Politics and government--1939-1975.
Spain--Politics and government--1975-1982.
Princeton subject headings:
Spain--Politics and government--1939-1975.
Spain--Politics and government--1975-1982.