Columbia subject headings:
Berlin (Germany)--Intellectual life--20th century.
Delaunay, Robert, 1885-1941--Appreciation--Germany--Berlin.
Harvard subject headings:
Artists--Travel--Germany--Berlin--History--20th century.
Avant-garde (Aesthetics)--Europe--History--20th century.
Delaunay, Robert, 1885-1941--Criticism and interpretation.
Princeton subject headings:
Avant-garde (Aesthetics)--Europe--History--20th century.
Delaunay, Robert, 1885-1941--Criticism and interpretation.