Columbia subject headings:
Architecture--Italy--Piacenza--History.
Art--Italy--Piacenza--History.
Harvard subject headings:
Arisi, Ferdinando.
Art historians--Italy--Piacenza.
Art--Italy--Piacenza (Province).
Art--Italy--Piacenza.
Princeton subject headings:
Architecture--Italy--Piacenza--History.
Art--Italy--Piacenza--History.