Columbia subject headings:
Nationalism--Spain--País Vasco--Congresses.
País Vasco (Spain)--History--Autonomy and independence movements--Congresses.
País Vasco (Spain)--Politics and government--Congresses.
Harvard subject headings:
Princeton subject headings:
Nationalism--Spain--País Vasco--History--Congresses.
País Vasco (Spain)--History--Autonomy and independence movements--Congresses.
País Vasco (Spain)--Politics and government--Congresses.