Columbia subject headings:
Architecture--Italy--Volterra.
Art--Italy--Volterra.
Christian art and symbolism--Italy--Volterra.
Church buildings--Italy--Volterra.
Volterra (Italy)--Buildings, structures, etc.
Harvard subject headings:
Architecture--Italy--Volterra.
Art--Italy--Volterra.
Christian art and symbolism--Italy--Volterra.
Church buildings--Italy--Volterra.
Volterra (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Italy--Volterra.
Art--Italy--Volterra.
Christian art and symbolism--Italy--Volterra.
Church buildings--Italy--Volterra.
Volterra (Italy)--Buildings, structures, etc.