Columbia subject headings:
Convento di San Sisto (Rome, Italy)
Dominicans--History.
Dominicans--Italy--Rome.
Dominicans. Province of Ireland--History.
Excavations (Archaeology)--Italy--Rome.
San Clemente (Church : Rome, Italy)
San Sisto vecchio (Church : Rome, Italy)
Harvard subject headings:
San Clemente (Church : Rome, Italy)--Miscellanea.
Princeton subject headings: