Columbia subject headings:
Dramatists, German--Criticism and interpretation--Congresses.
Hebbel, Friedrich, 1813-1863--Criticism and interpretation--Congresses.
Poets, German--Criticism and interpretation--Congresses.
Harvard subject headings:
Dramatists, German--Congresses.
Hebbel, Friedrich, 1813-1863--Criticism and interpretation--Congresses.
Poets, German--Congresses.
Princeton subject headings:
Dramatists, German--Criticism and interpretation--Congresses.
Hebbel, Friedrich, 1813-1863--Criticism and interpretation--Congresses.
Poets, German--Criticism and interpretation--Congresses.