Afrique de l'Ouest (1) puits (1) papier (1) agriculture (1) documentation (1) démographie (1) comparaison (1) ligne (1) climat (1) Afrique (1) Documentation (1) Context (1) Language (1) Comparison (1) Variation (1) Area (1) Agriculture (1) Showing (1) Mitochondrial DNA (1) Pastoral systems (1) Area (1) Y chromosome (1) Waves (1) Population (1) Paper (1) Matches (1) Language surveys (1) Language and languages (1) Imperialism (1) Impact (1)