Population growth and socioeconomic change in West Africa

africa afrique benin burkina faso cameroon cameroun camerun chad cote d'ivoire democratic republic of the congo dynamique des populations familia families famille family planning fertilidad fertilite fertility gabon gambia gambie ghana human population liberia migration mortalidad mortalite mortality niger nigeria nomadism planification de la famille population dynamics population humaine senegal sierra leona sierra leone sociologia sociologie sociology state intervention tchad togo urbanisation urbanization