Columbia subject headings:
Expressionism (Art)--Germany.
Mueller, Otto, 1874-1930--Criticism and interpretation.
Harvard subject headings:
Expressionism (Art)--Germany
Mueller, Otto, 1874-1930--Catalogs.
Mueller, Otto, 1874-1930--Criticism and interpretation.
Princeton subject headings:
Expressionism (Art)--Germany.
Mueller, Otto, 1874-1930--Criticism and interpretation.