Columbia subject headings:
Braulio, Saint, Bishop of Zaragoza, approximately 585-approximately 651--Correspondence.
Catholic Church--Bishops--Correspondence.
Church history--Middle Ages, 600-1500.
Harvard subject headings:
Braulio, Saint, Bishop of Zaragoza, approximately 585-approximately 651--Correspondence.
Catholic Church--Bishops--Correspondence.
Church history--Middle Ages, 600-1500
Princeton subject headings: