Columbia subject headings:
Books--Byzantine Empire--History.
Byzantine Empire--Intellectual life.
Knowledge, Theory of--History.
Manuscripts, Greek (Medieval and modern)
Harvard subject headings:
Books--Byzantine Empire--History.
Byzantine Empire--Intellectual life.
Manuscripts, Greek (Medieval and modern)--Byzantine Empire--History.
Written communication--Byzantine Empire--History.
Princeton subject headings:
Books--Byzantine Empire--History.
Byzantine Empire--Intellectual life.
Knowledge and learning--History.
Manuscripts, Greek (Medieval and modern)