Columbia subject headings:
Basilicas--Italy--Rome.
Christian antiquities--Italy--Rome.
Excavations (Archaeology)--Italy--Rome.
Rome (Italy)--Antiquities.
Via Ardeatina (Italy)--Antiquities.
Harvard subject headings:
Princeton subject headings:
Architecture, Early Christian--Italy--Rome.
Christian antiquities--Italy--Rome.
Church architecture--Italy--Rome.
Excavations (Archaeology)--Italy--Rome.
Rome (Italy)--Antiquities.
Rome (Italy)--Building, structures, etc.