Columbia subject headings:
Art--Conservation and restoration--Italy--Florence--History--20th century.
Art--Conservation and restoration--Italy--Florence--History--21st century.
Opificio delle pietre dure--History.
Harvard subject headings:
Art--Conservation and restoration--Italy--Florence--History--20th century.
Art--Conservation and restoration--Italy--Florence--History--21st century.
Opificio delle pietre dure--History.
Princeton subject headings:
Art--Conservation and restoration--Italy--Florence--History--20th century.
Art--Conservation and restoration--Italy--Florence--History--21st century.
Opificio delle pietre dure--History.