Columbia subject headings:
Decoration and ornament, Architectural--Italy--Tuscany--Congresses.
Decoration and ornament, Medieval--Italy--Tuscany--Congresses.
Marble sculpture, Italian--Italy--Tuscany--12th century--Congresses.
Marble sculpture, Italian--Italy--Tuscany--13th century--Congresses.
Marble sculpture, Medieval--Italy--Tuscany--Congresses.
Stone carving--Italy--Tuscany--History--Congresses.
Harvard subject headings:
Decoration and ornament, Architectural--Italy--Tuscany--Congresses.
Decoration and ornament, Medieval--Italy--Tuscany--Congresses.
Incrustation (Stone carving)--Italy--Tuscany--Congresses.
Marble sculpture, Italian--Italy--Tuscany--12th century--Congresses.
Marble sculpture, Italian--Italy--Tuscany--13th century--Congresses.
Marble sculpture, Medieval--Italy--Tuscany--Congresses.
Stone carving--Italy--Tuscany--History--Congresses.
Princeton subject headings:
Decoration and ornament, Architectural--Italy--Tuscany--Congresses.
Decoration and ornament, Medieval--Italy--Tuscany--Congresses.
Marble sculpture, Italian--Italy--Tuscany--12th century--Congresses.
Marble sculpture, Italian--Italy--Tuscany--13th century--Congresses.
Marble sculpture, Medieval--Italy--Tuscany--Congresses.
Stone carving--Italy--Tuscany--History--Congresses.