Columbia subject headings:
Christian saints--Turkey--Correspondence.
Gregory, of Nyssa, Saint, approximately 335-approximately 394--Correspondence.
Harvard subject headings:
Christian saints--Turkey--Correspondence.
Gregory, of Nyssa, Saint, approximately 335-approximately 394. Correspondence.
Princeton subject headings:
Gregory, of Nyssa, Saint, approximately 335-approximately 394. Correspondence.
Theology--Early works to 1800.
Theology--History--Early church, ca. 30-600.