Columbia subject headings:
Authors, German--19th century--Biography.
Laube, Heinrich, 1806-1884--Congresses.
Laube, Heinrich, 1806-1884--Criticism and interpretation--Congresses.
Harvard subject headings:
Authors, German--19th century--Biography--Congresses.
Journalists--Germany--Biography--Congresses.
Laube, Heinrich, 1806-1884--Congresses.
Princeton subject headings:
Authors, German--19th century--Biography.
Laube, Heinrich, 1806-1884--Congresses.
Laube, Heinrich, 1806-1884--Criticism and interpretation--Congresses.