Cell phones (2) Adoption (2) technologie (2) enquête (1) spectacle (1) secteur des services (1) marché (1) ménage (1) santé (1) champ (1) éducation (1) diffusion (1) âge (1) Afrique (1) point (1) internet (1) niveau d'études (1) ordre (1) continent (1) Afrique (1) Education (1) Family relationships (1) Marketing (1) Government policy (1) Employment (1) Assaying (1) Foreign countries (1) Cell phone systems (1) Internet (1) Station wagons (1)