Columbia subject headings:
Harvard subject headings:
Architecture, Renaissance.
Architecture--Italy
Art, Italian
Art--Italy.
Constantine I, Emperor of Rome, -337
Diocletian, Emperor of Rome, 245-313
Greece--Civilization--To 146 B.C.
History--Philosophy
Italy--Civilization--1268-1559.
Renaissance--Italy
Rome--History--Constantine I, the Great, 306-337.
Rome--History--Diocletian, 284-305
Princeton subject headings:
Art--Italy.
Civilization.