Columbia subject headings:
Harvard subject headings:
France--Church history--Sources.
Rouen (France)--Church history--Sources.
Saint-Omer (Pas-de-Calais, France)--Church history--Sources.
Saint-Omer (Pas-de-Calais, France)--History--Sources.
Princeton subject headings:
France--Church history--Sources.
Rouen (France)--Church history--Sources.
Saint-Omer (Pas-de-Calais, France)--Church history--Sources.
Saint-Omer (Pas-de-Calais, France)--History--Sources.