Columbia subject headings:
Censorship--Germany--History--19th century--Congresses.
German literature--19th century--History and criticism--Congresses.
German literature--Censorship--Congresses.
Harvard subject headings:
Censorship--Germany--History--19th century--Congresses.
German literature--19th century--History and criticism--Congresses
German literature--Censorship--Congresses.
Princeton subject headings:
Censorship--Germany--History--19th century--Congresses.
German literature--19th century--History and criticism--Congresses.
German literature--Censorship--Congresses.