Columbia subject headings:
Harvard subject headings:
Byzantine Empire--History--Palaeologi dynasty, 1259-1448.
Emperors--Byzantine Empire--Biography
Michael IX Palaeologus, Emperor of the East, 1277-1320.
Princeton subject headings:
Byzantine Empire--History--Palaeologi dynasty, 1259-1448.
Emperors--Byzantine Empire--Biography.
Michael IX Palaeologus, Emperor of the East, 1277-1320.