Columbia subject headings:
Bishops--Italy--History.
Catholic Church--Italy--History.
Church history--Primitive and early church, ca. 30-600.
Dioceses--Italy--History.
Harvard subject headings:
Catholic Church--Italy--History.
Dioceses--Italy--History.
Princeton subject headings:
Bishops--Italy--History.
Catholic Church--Italy--History.
Church history--Primitive and early church, ca. 30-600.
Dioceses--Italy--History.