Columbia subject headings:
Architecture--Italy--History--19th century.
Architecture--Italy--History--20th century.
Art nouveau (Architecture)--Italy.
Harvard subject headings:
Architecture, Modern--19th century--Italy.
Architecture--Italy--History--20th century
Art nouveau (Architecture)--Italy.
Princeton subject headings:
Architecture, Modern--19th century--Italy.
Architecture--Italy--History--20th century.
Art nouveau (Architecture)--Italy.