Columbia subject headings:
Politics and literature--Spain.
Protest literature, Spanish--History and criticism.
Spanish drama--20th century--History and criticism.
Harvard subject headings:
Spanish drama--20th century--History and criticism.
Theater--Political aspects--Spain.
Theater--Spain--History--20th century.
Princeton subject headings:
Politics and literature--Spain.
Protest literature, Spanish--History and criticism.
Spanish drama--20th century--History and criticism.