Columbia subject headings:
Byzantine Empire--History--John VIII Palaeologus, 1425-1448.
Byzantine Empire--History--Manuel II Palaeologus, 1391-1425.
Byzantine Empire--Kings and rulers--Biography.
John VIII Palaeologus, Emperor of the East, 1392-1448.
Harvard subject headings:
Byzantine Empire--History--John VIII Palaeologus, 1425-1448.
Byzantine Empire--History--Manuel II Palaeologus, 1391-1425.
Byzantine Empire--Kings and rulers--Biography.
John VIII Palaeologus, Emperor of the East, 1392-1448.
Princeton subject headings: