Columbia subject headings:
Bishops--France--Normandy--History--Congresses.
Church history--11th century--Congresses.
Normandy (France)--Church history--Congresses.
Normandy (France)--History--To 1515--Congresses.
Harvard subject headings:
Princeton subject headings:
Bishops--France--Normandy--History--Congresses.
Normandy (France)--Church history--Congresses.