Columbia subject headings:
Popular culture--Spain--Congresses.
Popular literature--Spain--Congresses.
Spanish literature--19th century--History and criticism--Congresses.
Spanish literature--20th century--History and criticism--Congresses.
Harvard subject headings:
Popular culture--Spain--Congresses.
Popular literature--Spain--Congresses.
Spanish literature--19th century--History and criticism--Congresses
Spanish literature--20th century--History and criticism--Congresses
Princeton subject headings:
Popular culture--Spain--History--Congresses.
Popular literature--Spain--Congresses.
Spanish literature--19th century--History and criticism--Congresses.
Spanish literature--20th century--History and criticism--Congresses.