Columbia subject headings:
Architecture, Early Christian--Italy--Rome--Congresses.
Church architecture--Conservation and restoration--Italy--Rome--Congresses.
Rome (Italy)--Buildings, structures, etc.--Congresses.
Round churches--Italy--Rome--Congresses.
Santo Stefano Rotondo (Church : Rome, Italy)--Congresses.
Harvard subject headings:
Princeton subject headings:
Church architecture--Conservation and restoration--Italy--Rome.
Santo Stefano Rotondo (Church : Rome, Italy)