Columbia subject headings:
Gregoras, Nicephorus, 1295-1359 or 1360--Criticism and interpretation.
Harvard subject headings:
Gregoras, Nicephorus, 1295-1359 or 1360
Scholars--Byzantine Empire--Biography.
Princeton subject headings:
Gregoras, Nicephorus, 1295-1359 or 1360--Criticism and interpretation.