Columbia subject headings:
French language--Etymology--Names.
Names, Geographical--France--Pas-de-Calais.
Nord-Pas-de-Calais (France)--History, Local.
Harvard subject headings:
Pas-de-Calais (France)--Names, Geographical.
Princeton subject headings:
French language--Etymology--Names.
Names, Geographical--France--Pas-de-Calais.
Pas-de-Calais (France)--History, Local.