zone urbaine (1) enseignement primaire (1) papier (1) minéral (1) littérature (1) revenu (1) expérience scientifique (1) éducation (1) Afrique (1) abords (agglomération) (1) Afrique (1) Education (Primary) (1) Education (1) Children (1) Channels (1) Social sciences (1) Probabilities (1) Percentage (1) Parents (1) Paper (1) Natural resources (1) Migration, Internal (1) Males (1) Literature (1) Income (1) Education, Primary (1) Education (1) Children (1) Africa (1) Educational mobility (1)