Columbia subject headings:
Art, German--Germany--Berlin--20th century.
Art, German--Germany--Berlin.
Avant-garde (Aesthetics)--Germany--Berlin--History--20th century.
Harvard subject headings:
Art, German--Germany--Berlin.
Art, Modern--20th century--Germany--Berlin.
Avant-garde (Aesthetics)--Germany--Berlin--History--20th century.
Princeton subject headings:
Art, German--20th century--Berlin.
Art, German--Germany--Berlin.
Avant-garde (Aesthetics)--Germany--Berlin.
Galerie Gerd Rosen--History.