Columbia subject headings:
Spain--History--Bibliography.
Spain--Relations--Tunisia--Bibliography.
Tunisia--History--Bibliography.
Tunisia--Relations--Spain--Bibliography.
Harvard subject headings:
Spain--History--Bibliography.
Spain--Relations--Tunisia--Bibliography.
Tunisia--History--Bibliography.
Tunisia--Relations--Spain--Bibliography.
Princeton subject headings:
Spain--History--Bibliography.
Spain--Relations--Tunisia--Bibliography.
Tunisia--History--Bibliography.
Tunisia--Relations--Spain--Bibliography.