Columbia subject headings:
Harvard subject headings:
German language--Rhetoric--Congresses.
German literature--19th century--History and criticism--Congresses
German literature--20th century--History and criticism--Congresses
Princeton subject headings:
German language--Rhetoric--Congresses.
German literature--19th century--History and criticism--Congresses.
German literature--20th century--History and criticism--Congresses.