Columbia subject headings:
Harvard subject headings:
Art criticism--Italy--Orvieto--History--20th century.
Art literature--Italy--Orvieto--History--20th century.
Art, Italian--Italy--Orvieto.
Princeton subject headings:
Art criticism--Italy--Orvieto--History--20th century.
Art literature--Italy--Orvieto--History--20th century.
Art, Italian--Italy--Orvieto.