Columbia subject headings:
Harvard subject headings:
Ibsen, Henrik, 1828-1906--Criticism and interpretation--Congresses.
Ibsen, Henrik, 1828-1906--Stage history--Congresses.
Princeton subject headings:
Ibsen, Henrik, 1828-1906--Criticism and interpretation--Congresses.
Ibsen, Henrik, 1828-1906--Stage history--Congresses.