Columbia subject headings:
Harvard subject headings:
Arp, Jean, 1887-1966--Criticism and interpretation.
Arts, German--Germany--Cologne.
Arts, Modern--20th century--Germany--Cologne.
Dadaism--Germany--Cologne.
Ernst, Max, 1891-1976--Criticism and interpretation.
Gruenwald, Alfred Ferdinand, 1892-1927--Criticism and interpretation.
Princeton subject headings:
Arp, Jean, 1887-1966.
Art, German--20th century--Cologne.
Art, German--Germany--Cologne.
Dadaism--Germany--Cologne.
Ernst, Max, 1891-1976.
Gruenwald, Alfred Ferdinand, 1892-1927.