17 maps; 26 x 68 cm or smaller.Scales differ (W 14°--E 22°/N 12°--N 7°30ʹ). ; Title from Hunter, John M. Search areas for new lands in the Sahel, title page of Part 2. Tchad.9980785173002441ark:/81985/n2dv1fp0f[Club du Sahel?] ; [C.I.L.S.S.?]PublicCrops and climatePopulation geographyTchadMapsChad1977Northwestern University