Columbia subject headings:
Communists--Spain--País Vasco.
Democratization--Spain--País Vasco.
Democratization--Spain.
Spain--Politics and government--1975-1982.
Harvard subject headings:
Communists--Spain--País Vasco.
Democratization--Spain--País Vasco.
Democratization--Spain.
Spain--Politics and government--1975-1982.
Spain--Politics and government--1982-
Princeton subject headings:
Communists--Spain--País Vasco.
Democratization--Spain--País Vasco.
Democratization--Spain.
Spain--Politics and government--1975-1982.
Spain--Politics and government--1982-