Relief show by contours and spot heights. "Army Map Service, U. S. Army, Washington, D. C. 104449. 4-43. 1943" "North West Africa Zone Grid." "Approximate mean declination 1943. For center of sheet annual magnetic change 6ʹ decrease." AMS 1. [Great Britain. War Office. General Staff. Geographical Section.] Provisional G.S.G.S. no. 4275. Alternate title: Touggourt. In upper left margin: Algeria 1:5,000. Lambert conical orthomorphic projection. North West Africa zone grid. Relief shown by contour intervals and spot elevations. Lambert conical orthomorphic projection. North West Africa zone grid. United States. Army Map Service.