Columbia subject headings:
Harvard subject headings:
Families--Spain--Congresses.
Families--Spain--History--Congresses.
Spain--Social conditions--19th century--Congresses.
Spain--Social conditions--To 1800--Congresses.
Spanish literature--18th century--History and criticism--Congresses.
Spanish literature--19th century--History and criticism--Congresses
Princeton subject headings:
Families--Spain--History--Congresses.
Spain--Social conditions--19th century--Congresses.
Spain--Social conditions--To 1800--Congresses.
Spanish literature--18th century--History and criticism--Congresses.
Spanish literature--19th century--History and criticism--Congresses.