Columbia subject headings:
Political parties--Spain--History.
Spain--Politics and government--1975-1982.
Two-party systems--Spain--History.
Harvard subject headings:
Political parties--Spain--History.
Spain--Politics and government--1975-
Two-party systems--Spain--History.
Princeton subject headings:
Political parties--Spain--History.
Spain--Politics and government--1975-
Two-party systems--Spain--History.