Columbia subject headings:
Harvard subject headings:
European drama--20th century--History and criticism.
Pirandello, Luigi, 1867-1936--Appreciation--Europe.
Pirandello, Luigi, 1867-1936--Influence.
Princeton subject headings:
European drama--19th century--History and criticism.
Expressionism in literature.
Pirandello, Luigi, 1867-1936--Criticism and interpretation.