Columbia subject headings:
Architecture--Conservation and restoration--Italy--History--20th century.
Giovannoni, Gustavo, 1873-1947.
Monuments--Conservation and restoration--Italy--History--20th century.
Harvard subject headings:
Architecture--Conservation and restoration--Italy--History--20th century.
Giovannoni, Gustavo, 1873-1947.
Monuments--Conservation and restoration--Italy--History--20th century.
Princeton subject headings:
Architecture--Conservation and restoration--Italy--History--20th century.
Giovannoni, Gustavo, 1873-1947.
Monuments--Conservation and restoration--Italy--History--20th century.