France and Belgium 1:50,000.

Bibliographic Details
Corporate Authors: Great Britain. War Office. General Staff. Geographical Section, Great Britain. Ordnance Survey
Format: Map
Language:English
Published: [London] : War Office, 1937-
Series:GSGS (Series) ; 4040.
Subjects:
Description
Item Description:Covers most of Belgium and northeastern France. Set includes various issues of some sheets, some reissued by U.S. Army Map Service.
"Contour interval 5 [or 10] metres."
Military grid.
Six classes of roads and paths, three classes of railroads, three types of internal boundaries, various types of vegetation, and aerodromes and landing grounds are indicated.
Compiled and drawn by Ordnance Survey.
Marginal maps: Incidence of grid letters and index to adjoining sheets.--Reliability diagram.
Cartographic material.
Physical Description:maps : color ; 72 x 61 cm. or smaller.