Columbia subject headings:
Harvard subject headings:
Abbadia San Salvatore (Italy)--Religious life and customs.
Abbadia San Salvatore (Siena, Italy)
Church decoration and ornament--Italy--Abbadia San Salvatore.
Mark, Saint--Art.
Mark, Saint--Cult--Italy--Abbadia San Salvatore.
Mark, Saint--Cult--Italy--Siena (Province)
Princeton subject headings:
Abbadia San Salvatore (Siena, Italy)
Abbeys--Italy--Siena.
Church decoration and ornament--Italy--Siena.
Marcus, Pope, d. 336.
Siena (Italy)--Church history.