Columbia subject headings:
German literature--20th century--History and criticism--Congresses.
German literature--Foreign countries--History and criticism--Congresses.
Harvard subject headings:
German literature--20th century--Congresses.
German literature--Foreign countries--Congresses.
Princeton subject headings:
German literature--20th century--History and criticism--Congresses.
German literature--Foreign countries--History and criticism--Congresses.