Columbia subject headings:
German literature--20th century--History and criticism--Congresses.
German literature--Germany (East)--History and criticism--Congresses.
German literature--Germany (West)--History and criticism--Congresses.
German literature--Germany--History and criticism--Congresses.
Harvard subject headings:
German literature--20th century--History and criticism--Congresses
German literature--Germany--History and criticism--Congresses.
Princeton subject headings: