Tenants and nomads in eastern Sudan. A study of economic adaptations in the New Halfa Scheme

anthropologie sociale antropologia social cambio social changement social colonisation rurale cultural development desarrollo cultural empleo emploi employment fermage migration nomadism nomadisme nomadismo population structure pueblos rural settlement social anthropology social change social values structure de la population tenancy tenencia indirecta transhumance trashumancia valeur sociale valores sociales village villages