Columbia subject headings:
Harvard subject headings:
Basilicas (Roman architecture)--Italy--Rome.
Church architecture--Italy--Rome.
Church history--Primitive and early church, ca. 30-600
Church history--Primitive and early church, ca. 30-600.
Constantine I, Emperor of Rome, -337
Rome (Italy)--Buildings, structures, etc.
Rome--History--Constantine I, the Great, 306-337.
Sylvester I, Pope, -335.
Princeton subject headings:
Basilicas (Roman architecture)--Italy--Rome.
Church architecture--Italy--Rome.
Church history--Primitive and early church, ca. 30-600.
Constantine I, Emperor of Rome, -337.
Rome (Italy)--Buildings, structures, etc.
Rome--History--Constantine I, the Great, 306-337.
Sylvester I, Pope, -335.