Columbia subject headings:
País Vasco (Spain)--Church history.
País Vasco (Spain)--Social conditions.
Harvard subject headings:
Catholic Church--Spain--País Vasco--History.
País Vasco (Spain)--Church history.
País Vasco (Spain)--Church history.
País Vasco (Spain)--Social conditions.
Princeton subject headings:
Catholic Church--Spain--País Vasco--History.
País Vasco (Spain)--Church history.