Columbia subject headings:
Art brut--Europe--Exhibitions.
Art, European--20th century--Exhibitions.
Art, European--21st century--Exhibitions.
Art--Private collections--Italy--Exhibitions.
Collezione Fabio e Leo Cei--Exhibitions.
Outsider art--Europe--Exhibitions.
Harvard subject headings:
Art brut--Europe--Exhibitions.
Art, European--20th century--Exhibitions
Art, European--21st century--Exhibitions
Art--Private collections--Italy--Exhibitions
Collezione Fabio e Leo Cei--Exhibitions.
Outsider art--Europe--Exhibitions.
Princeton subject headings:
Art brut--Europe--Exhibitions.
Art, European--20th century--Exhibitions.
Art, European--21st century--Exhibitions.
Art--Private collections--Italy--Exhibitions.
Collezione Fabio e Leo Cei--Exhibitions.
Outsider art--Europe--Exhibitions.