Columbia subject headings:
Art, Italian--Italy--Tuscania--Congresses.
Art--Italy--Tuscania--Congresses.
Harvard subject headings:
Architecture--Italy--Tuscania--Congresses.
Art, Italian--Italy--Tuscania--Congresses.
Art--Italy--Tuscania--Congresses.
Christian art and symbolism--Italy--Tuscania--Congresses.
Santa Maria dell'Olivo (Church : Tuscania, Italy)--Congresses.
Santa Maria dell'Olivo (Church : Tuscania, Italy)--History--Congresses.
Tuscania (Italy)--Buildings, structures, etc.--Congresses.
Tuscania (Italy)--Church history--Sources--Congresses.
Princeton subject headings:
Art, Italian--Italy--Tuscania--Congresses.
Art--Italy--Tuscania--Congresses.