Columbia subject headings:
Harvard subject headings:
Art and state--Italy--Piacenza (Province)--Exhibitions.
Art patronage--Italy--Piacenza (Province)--Exhibitions.
Art, Italian--Italy--Piacenza (Province)--Exhibitions.
Charities--Italy--Piacenza (Province)--Exhibitions.
Princeton subject headings:
Art and state--Italy--Piacenza (Province)--Exhibitions.
Art patronage--Italy--Piacenza (Province)--Exhibitions.
Art, Italian--Italy--Piacenza (Province)--Exhibitions.
Charities--Italy--Piacenza (Province)--Exhibitions.