Columbia subject headings:
Athanasius, Saint, Patriarch of Alexandria, -373. Epistolae festales.
Harvard subject headings:
Athanasius, Saint, Patriarch of Alexandria, -373. Epistolae festales
Fasts and feasts--Early church, ca. 30-600.
Princeton subject headings:
Athanasius, Saint, Patriarch of Alexandria, d. 373. Epistolae festales.