Columbia subject headings:
German literature--20th century--Congresses.
Music in literature--Congresses.
Harvard subject headings:
Literature, Modern--20th century--History and criticism--Congresses
Music and literature--History--Congresses.
Music in literature--History--Congresses.
Music--20th century--History and criticism--Congresses.
Poetry, Modern--20th century--History and criticism--Congresses.
Princeton subject headings:
Essays.
German literature--20th century--Congresses.
Music in literature--Congresses.