Columbia subject headings:
Harvard subject headings:
Byzantine Empire--History--527-1081.
Italy, Southern--Civilization--Byzantine influences.
Italy, Southern--History--535-1268.
Italy--History--476-1268.
Princeton subject headings:
Byzantine Empire--527-1081.
Italy--Church history--476-1400.
Italy--Civilization--Byzantine influences.
Italy--History--476-1268.
Italy--Politics and government--476-1268.