France and Belgium 1:25,000, Dunkerque, NE
This is sheet 29NE of the map series France and Belgium 1:25,000 , Series GSGS 4041, which covers the whole of Belgium, plus the north-east of France, in a total of 818 sheets.
The British LibraryGreat Britain. War Office. General Staff. Geographical Section.
1937
[S.l.] : [GSGS, War Office]