Columbia subject headings:
Archives--France--Artois--History--Congresses.
Artois (France)--History--Sources--Congresses.
France--History--Capetians, 987-1328--Sources--Congresses.
Harvard subject headings:
Archives--France--Artois--History--Congresses.
Artois (France)--History--To 1500--Congresses.
France--History--Capetians, 987-1328--Congresses.
Princeton subject headings:
Archives--France--Artois--History--Congresses.
Artois (France)--History--To 1500--Congresses.
France--History--Capetians, 987-1328--Congresses.