Columbia subject headings:
Harvard subject headings:
German literature--Germany--Rhineland--History and criticism--Congresses.
Rhineland (Germany)--History--Congresses.
Rhineland (Germany)--Intellectual life--19th century--Congresses.
Rhineland (Germany)--Intellectual life--20th century--Congresses.
Princeton subject headings:
German literature--Germany--Rhineland--History and criticism.
Rhineland (Germany)--History--19th century.
Rhineland (Germany)--History--20th century.