Columbia subject headings:
Fortification--France--Mons-en-Barœul.
Mons-en-Barœul (France)--Buildings, structures, etc.
Mons-en-Barœul (France)--History.
Harvard subject headings:
Fortification--France--Mons-en-Barœul.
Mons-en-Barœul (France)--Buildings, structures, etc.
Mons-en-Barœul (France)--History.
Princeton subject headings: