Columbia subject headings:
European drama--History and criticism--Congresses.
Mysteries and miracle-plays--History and criticism--Congresses.
Religious drama--History and criticism--Congresses.
Harvard subject headings:
European drama--History and criticism--Congresses.
Mysteries and miracle-plays--History and criticism--Congresses.
Religious drama--History and criticism--Congresses.
Princeton subject headings:
European drama--History and criticism--Congresses.
Mysteries and miracle-plays--History and criticism--Congresses.
Religious drama--History and criticism--Congresses.