Columbia subject headings:
Harvard subject headings:
Byzantine Empire--Intellectual life.
Education--Byzantine Empire--History.
Kastamonitēs, Iōannēs, active 12th century.
Manuscripts, Greek (Medieval and modern)--Byzantine Empire--History.
Manuscripts, Medieval--Byzantine Empire--History.
Princeton subject headings:
Byzantine Empire--Intellectual life.
Education--Byzantine Empire--History.
Kastamonitēs, Iōannēs, active 12th century.
Manuscripts, Greek (Medieval and modern)--Byzantine Empire--History.
Manuscripts, Medieval--Byzantine Empire--History.