Columbia subject headings:
Hacks, Peter, 1928-2003--Congresses.
Hacks, Peter, 1928-2003--Criticism and interpretation--Congresses.
Utopian plays--Congresses.
Utopias in literature--Congresses.
Harvard subject headings:
Hacks, Peter, 1928-2003--Congresses.
Hacks, Peter, 1928-2003--Criticism and interpretation--Congresses.
Utopian plays--Congresses.
Utopias in literature--Congresses.
Utopias--Congresses
Princeton subject headings:
Hacks, Peter, 1928-2003--Congresses.
Hacks, Peter, 1928-2003--Criticism and interpretation--Congresses.
Utopian plays--Congresses.
Utopias in literature--Congresses.