Columbia subject headings:
Ball, Hugo, 1886-1927.
Schwitters, Kurt, 1887-1948.
Walser, Robert, 1878-1956.
Harvard subject headings:
Ball, Hugo, 1886-1927--Criticism and interpretation.
Schwitters, Kurt, 1887-1948--Criticism and interpretation.
Walser, Robert, 1878-1956--Criticism and interpretation.
Princeton subject headings:
Ball, Hugo, 1886-1927--Criticism and interpretation.
German literature--20th century--History and criticism.
Play in literature.
Schwitters, Kurt, 1887-1948--Criticism and interpretation.
Walser, Robert, 1878-1956--Criticism and interpretation.