Columbia subject headings:
Church and state--Italy.
Church history--Middle Ages, 600-1500.
Florence (Italy)--History--To 1421.
Rome (Italy)--History--476-1420.
Harvard subject headings:
Church and state--Italy.
Church history--Middle Ages, 600-1500
Florence (Italy)--History--To 1421
Rome (Italy)--History--476-1420.
Princeton subject headings:
Church and state--Italy.
Church history--Middle Ages, 600-1500.
Cities and towns, Medieval--Italy.
Florence (Italy)--History--To 1421.
Rome (Italy)--History--476-1420.