Columbia subject headings:
Ball, Hugo, 1886-1927--Criticism and interpretation.
German literature--20th century--History and criticism.
Modernism (Literature)--Germany.
Schwitters, Kurt, 1887-1948--Criticism and interpretation.
Harvard subject headings:
Ball, Hugo, 1886-1927--Criticism and interpretation.
Schwitters, Kurt, 1887-1948--Criticism and interpretation.
Princeton subject headings:
Ball, Hugo, 1886-1927--Criticism and interpretation.
German literature--20th century--History and criticism.
Modernism (Literature)--Germany.
Schwitters, Kurt, 1887-1948--Criticism and interpretation.