Columbia subject headings:
German literature--20th century--History and criticism--Congresses.
Germany--History--1918-1933--Congresses.
Harvard subject headings:
German literature--20th century--History and criticism--Congresses
Germany--History--1918-1933--Congresses.
Princeton subject headings:
German literature--20th century--History and criticism--Congresses.
Germany--History--1918-1933--Congresses.