Columbia subject headings:
Harvard subject headings:
Naturalism in literature.
Portuguese drama--19th century--History and criticism.
Portuguese drama--20th century--History and criticism.
Symbolism in literature.
Theater--Portugal--History--19th century.
Theater--Portugal--History--20th century.
Princeton subject headings:
Naturalism in literature.
Portuguese drama--19th century--History and criticism.
Portuguese drama--20th century--History and criticism.
Symbolism in literature.
Theater--Portugal--History--19th century.
Theater--Portugal--History--20th century.