Columbia subject headings:
Spanish drama--19th century--History and criticism.
Spanish drama--20th century--History and criticism.
Theater--Spain--History--19th century.
Theater--Spain--History--20th century.
Harvard subject headings:
Literature and society--Spain.
Spanish drama--19th century--History and criticism--Congresses.
Spanish drama--20th century--History and criticism--Congresses.
Princeton subject headings:
Literature and society--Spain.
Spanish drama--19th century--History and criticism--Congresses.
Spanish drama--20th century--History and criticism--Congresses.