Columbia subject headings:
Arnolfo, di Cambio, active 13th century--Criticism and interpretation--Congresses.
Art, Italian--Italy--Florence--Congresses.
Art, Medieval--Italy--Florence--Congresses.
Harvard subject headings:
Arnolfo, di Cambio, active 13th century--Congresses.
Art, Gothic--Italy--Congresses.
Princeton subject headings:
Arnolfo, di Cambio,--13th cent.--Criticism and interpretation--Congresses.
Art, Italian--Italy--Florence--Congresses.
Art, Medieval--Italy--Florence--Congresses.