Columbia subject headings:
Art--Conservation and restoration--Italy--Piedmont--Congresses.
Savoy, House of--Homes and haunts--Italy--Piedmont--Congresses.
Harvard subject headings:
Art--Conservation and restoration--Italy--Piedmont--Congresses.
Savoy, House of--Homes and haunts--Italy--Piedmont--Congresses.
Princeton subject headings:
Art--Conservation and restoration--Italy--Piedmont--Congresses.
Savoy, House of--Homes and haunts--Italy--Piedmont--Congresses.