Columbia subject headings:
Art, German--20th century--Exhibitions.
Art--Germany--Wuppertal--Exhibitions.
Expressionism (Art)--Germany--Exhibitions.
Von der Heydt-Museum--Exhibitions.
Harvard subject headings:
Art, German--20th century--Exhibitions.
Art--Germany--Wuppertal--Exhibitions.
Expressionism (Art)--Germany--Exhibitions
Von der Heydt-Museum--Exhibitions.
Princeton subject headings: