Columbia subject headings:
Architecture--Italy--History--19th century--Congresses.
Architecture--Italy--History--20th century--Congresses.
Guidini, Augusto, 1853-1928--Criticism and interpretation--Congresses.
Harvard subject headings:
Architecture--Italy--History--19th century--Congresses.
Architecture--Italy--History--20th century--Congresses
Guidini, Augusto, 1853---Criticism and interpretation--Congresses.
Princeton subject headings: