Columbia subject headings:
Siena. San Giovanni (Church)
Harvard subject headings:
Church architecture--Conservation and restoration--Italy--Siena.
San Giovanni (Church : Siena, Italy)
Siena (Italy)--Buildings, structures, etc.
Socini, Agenore.
Princeton subject headings:
Church architecture--Italy--Siena--Conservation and restoration.
Siena. San Giovanni (Church).
Socini, Agenore.