Columbia subject headings:
Art, Italian--Italy--Piacenza.
Palaces--Conservation and restoration--Italy--Piacenza.
Palazzo Farnese (Piacenza, Italy)
Piacenza (Italy)--Buildings, structures, etc.--Conservation and restoration.
Harvard subject headings:
Art, Italian--Italy--Piacenza.
Palaces--Italy--Piacenza--Conservation and restoration.
Palazzo Farnese (Piacenza, Italy)
Piacenza (Italy)--Buildings, structures, etc.--Conservation and restoration.
Princeton subject headings:
Art, Italian--Italy--Piacenza.
Palaces--Italy--Piacenza--Conservation and restoration.
Palazzo Farnese (Piacenza, Italy)
Piacenza (Italy)--Buildings, structures, etc.--Conservation and restoration.