Columbia subject headings:
Harvard subject headings:
Art, Modern--Exhibitions
Art--Private collections--Exhibitions
Zannoni, Ugo--Art collections--Exhibitions.
Zannoni, Ugo--Exhibitions.
Princeton subject headings:
Art, Modern--Exhibitions.
Art--Private collections--Exhibitions.
Zannoni, Ugo--Art collections--Exhibitions.
Zannoni, Ugo--Exhibitions.