Columbia subject headings:
Byzantine Empire--History.
Rome--History--Empire, 284-476.
Harvard subject headings:
Byzantine Empire--History--527-1081.
Byzantine Empire--History--To 527.
Byzantine Empire--History.
Rome--Economic conditions.
Rome--History--Empire, 284-476.
Rome--Social conditions.
Princeton subject headings:
Byzantine Empire--History.
Rome--History--Empire, 284-476.