Columbia subject headings:
Art, Belgian--Exhibitions.
Art, European--20th century--Exhibitions.
Art, European--Exhibitions.
Art, German--Exhibitions.
Art, Modern--19th century--Exhibitions.
Industries in art--Exhibitions.
Working class in art--Exhibitions.
Harvard subject headings:
Art, Belgian--Exhibitions.
Art, European--20th century--Exhibitions
Art, European--Exhibitions
Art, German--Exhibitions.
Art, Modern--19th century--Europe--Exhibitions.
Industries in art--Exhibitions.
Working class in art--Exhibitions
Princeton subject headings: