Columbia subject headings:
Church buildings--Italy--Viterbo (Province)
Church decoration and ornament--Italy--Viterbo (Province)
Viterbo (Italy : Province)--Church history.
Harvard subject headings:
Church architecture--Italy--Viterbo (Province)--History.
Church buildings--Italy--Viterbo (Province)--History.
Church decoration and ornament--Italy--Viterbo (Province)
Viterbo (Italy : Province)--Buildings, structures, etc.
Viterbo (Italy : Province)--Church history.
Princeton subject headings:
Church buildings--Italy--Viterbo (Province).
Church decoration and ornament--Italy--Viterbo (Province).
Viterbo (Italy : Province)--Church history.