Columbia subject headings:
Harvard subject headings:
Architecture--Italy--History--19th century.
Architecture--Italy--History--20th century
Hotels--Italy--History--19th century.
Hotels--Italy--History--20th century.
Princeton subject headings:
Architecture--Italy--History--19th century.
Architecture--Italy--History--20th century.
Hotels--Italy--History--19th century.
Hotels--Italy--History--20th century.