Columbia subject headings:
Byzantine Empire--History--527-1081.
Byzantine Empire--History--Constantine VII Porphyrogenitus, 913-959.
Byzantine Empire--History--To 527.
Education of princes--Byzantine Empire.
Harvard subject headings:
Princeton subject headings:
Byzantine Empire--History--527-1081.
Byzantine Empire--History--Constantine VII Porphyrogenitus, 913-959.
Byzantine Empire--History--To 527.
Princes--Byzantine Empire--Education.