Columbia subject headings:
Harvard subject headings:
Boniface, Saint, Archbishop of Mainz, approximately 675-754--Congresses.
Church history--Middle Ages, 600-1500--Congresses.
Europe--Church history--Congresses.
Princeton subject headings:
Boniface, Saint, Archbishop of Mainz, approximately 675-754--Congresses.
Church history--Middle Ages, 600-1500--Congresses.