Columbia subject headings:
Bell towers--Italy--Florence--Congresses.
Campanile di Giotto (Florence, Italy)--Congresses.
Christian art and symbolism--Italy--Florence--Medieval, 500-1500--Congresses.
Pisano, Andrea, 1270-1348?--Congresses.
Relief (Sculpture), Italian--Italy--Florence--14th century--Congresses.
Relief (Sculpture), Medieval--Italy--Florence--Congresses.
Harvard subject headings:
Bell towers--Italy--Florence--Congresses.
Campanile di Giotto (Florence, Italy)--Congresses.
Christian art and symbolism--Italy--Florence--Medieval, 500-1500--Congresses.
Giotto, 1266?-1337--Congresses.
Pisano, Andrea, 1270-1348?--Congresses.
Relief (Sculpture), Italian--Italy--Florence--14th century--Congresses.
Relief (Sculpture), Medieval--Italy--Florence--Congresses.
Princeton subject headings:
Bell towers--Italy--Florence--Congresses.
Campanile di Giotto (Florence, Italy)--Congresses.
Christian art and symbolism--Italy--Florence--Medieval, 500-1500--Congresses.
Pisano, Andrea, 1270-1348?--Congresses.
Relief (Sculpture), Italian--Italy--Florence--14th century--Congresses.
Relief (Sculpture), Medieval--Italy--Florence--Congresses.