Columbia subject headings:
Gregory I, Pope, approximately 540-604--Authorship.
Gregory I, Pope, approximately 540-604. Dialogi.
Harvard subject headings:
Benedict, Saint, Abbot of Monte Cassino.
Gregory I, Pope, approximately 540-604. Dialogi.
Immortality.
Miracles.
Princeton subject headings:
Gregory I, Pope, approximately 540-604--Authorship.
Gregory I, Pope, approximately 540-604. Dialogi.