 
                                                    
                                               One of the titles in a series of topographic maps covering much of north-west Africa,  produced as part of the IMW* project in 1960’s. Each map covers an area spanning 6° in longitude & 4° in latitude. There is some variation in colouring & the depiction of terrain,  but hill-shading,  spot heights & contours are used to show the general relief. Additional graphics show features such as dunes,  rock outcrops,  cliffs,  sand areas,  escarpments,  marshes,  seasonal lakes & watercourses,  & areas liable to flooding. Bathymetric contours are also included. Communications detail 
 Includes:: roads,  major trails & railways,  although there is some inconsistency in colouring & the extent of classification,  e.g. not all maps distinguish seasonal roads. On most maps intermediate road distances are indicated on main routes. Symbols show airports,  mosques,  mines,  oil & gas fields,  lighthouses,  ruins & significant isolated buildings. Administrative boundaries are marked & latitude & longitude lines are drawn at 1° intervals,  with further margin ticks at 1’ intervals. The map legend is in French only on some sheets,  & in English & French on others.* The International Map of the World was a project conceived in the early 20th century to compile a world map series at 1:1,  000,  000 through the efforts of participating nations. The value of the program has declined since 1970 & the IMW is no longer regarded as an active international series.                                             
