Columbia subject headings:
Harvard subject headings:
Catholic Church--Controversial literature--Greek authors.
Theology--History--Middle Ages, 600-1500--Sources.
Princeton subject headings:
Eastern churches--Relations--Catholic Church--Early works to 1800.
Holy Spirit--Procession--Early works to 1800.
Manuscripts, Greek--Byzantine Empire.
Popes--Primacy--Early works to 1800.