Columbia subject headings:
Austrian drama--History and criticism--Congresses.
Folk drama, German--Austria--Vienna--History and criticism--Congresses.
German drama--19th century--History and criticism--Congresses.
Theater--Austria--History--19th century--Congresses.
Theater--Europe--History--19th century--Congresses.
Harvard subject headings:
Austrian drama--19th century--History and criticism--Congresses.
Austrian drama--History and criticism--Congresses.
Folk drama, German--Austria--Vienna--History and criticism--Congresses.
German drama--19th century--History and criticism--Congresses.
Theater--Austria--History--19th century--Congresses.
Theater--Europe--History--19th century--Congresses.
Princeton subject headings:
Austrian drama--History and criticism--Congresses.
Folk drama, German--Austria--Vienna--History and criticism--Congresses.
German drama--19th century--History and criticism--Congresses.
Theater--Austria--History--19th century--Congresses.
Theater--Europe--History--19th century--Congresses.