AMS 1. Alternate title: No. 53 Sidi Moh'd b' Abdallah. Polyconic projection. Northwest Africa and Sahara zone grids. Relief shown by 100 foot contour intervals. Compiled from Service Geographique du Maroc 1:100,000, 1938. Road classifications corrected from Army Map Service road map Northwest Africa, 1:1,000,000, 1942.