Columbia subject headings:
Basques--Spain--History.
País Vasco (Spain)--History.
Romans--Spain--History.
Spain--History--To 711.
Visigoths--Spain--History.
Harvard subject headings:
Basques--History.
Basques--Spain--History.
País Vasco (Spain)--History.
Romans--Spain--País Vasco.
Spain--History--To 711.
Visigoths--Spain
Princeton subject headings: