Columbia subject headings:
Harvard subject headings:
Pas-de-Calais (France)--Antiquities.
Pas-de-Calais (France)--Rural conditions--History.
Princeton subject headings:
Excavations (Archaeology)--France--Nord-Pas-de-Calais.
Nord-Pas-de-Calais (France)--Antiquities.
Nord-Pas-de-Calais (France)--Rural conditions.