Columbia subject headings:
Art galleries, Commercial--Italy--Milan--Exhibitions.
Art museums--Italy--Milan--Exhibitions.
Art, Modern--20th century--Exhibitions.
Harvard subject headings:
Art galleries, Commercial--Italy--Milan--Exhibitions.
Art museums--Exhibitions--Italy--Milan.
Art, Modern--20th century--Exhibitions
Princeton subject headings:
Art galleries, Commercial--Italy--Milan--Exhibitions.
Art museums--Italy--Milan--Exhibitions.
Art, Modern--20th century--Exhibitions.