Columbia subject headings:
Christian antiquities--Italy--Rome.
Christian antiquities--Rome.
Church buildings--Italy--Rome.
Rome (Italy)--Antiquities.
Rome--Antiquities.
Harvard subject headings:
Christian antiquities--Italy--Rome.
Church buildings--Italy--Rome.
Rome (Italy)--Antiquities.
Rome (Italy)--Buildings, structures, etc.
Rome--Antiquities.
Princeton subject headings:
Christian antiquities--Italy--Rome.
Church buildings--Italy--Rome.
Rome (Italy)--Antiquities.