Columbia subject headings:
Church and state--Europe--History--To 1500.
Church history--Middle Ages, 600-1500.
Europe--History--392-814.
Rome--History--Empire, 284-476.
Harvard subject headings:
Church and state--Europe--History--To 1500.
Church history--Middle Ages, 600-1500
Europe--History--392-814.
Rome--History--Empire, 284-476.
Princeton subject headings:
Church and state--Europe--History--To 1500.
Church history--Middle Ages, 600-1500.
Europe--History--392-814.
Rome--History--Empire, 284-476.