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