Columbia subject headings:
Art, Medieval--Italy--Volterra.
Art, Renaissance--Italy--Volterra.
Volterra (Italy)--History.
Harvard subject headings:
Art, Italian--Italy--Volterra.
Art, Medieval--Italy--Volterra.
Art, Renaissance--Italy--Volterra.
Volterra (Italy)--Description and travel.
Princeton subject headings:
Art, Medieval--Italy--Volterra.
Art, Renaissance--Italy--Volterra.
Volterra (Italy)--History.