Columbia subject headings:
Büchner, Georg, 1813-1837--Criticism and interpretation--Congresses.
Heine, Heinrich, 1797-1856--Criticism and interpretation--Congresses.
Harvard subject headings:
Büchner, Georg, 1813-1837--Criticism and interpretation--Congresses.
Heine, Heinrich, 1797-1856--Criticism and interpretation--Congresses.
Princeton subject headings:
Büchner, Georg, 1813-1837--Criticism and interpretation--Congresses.
Heine, Heinrich, 1797-1856--Criticism and interpretation--Congresses.