title: Fertility differentials among the tribal groups of Sierra Leone.
abstract: Abstract   Sierra Leone is in a position typical of many African countries regarding accurate information on her basic demographic characteristics. Such vital registration as exists is confined to a small area and there has been only one census of any reliability, that of 1963. Estimates of fertility levels from the age distribution obtained from that enumeration have been made by Dow, the method having been used previously by Van de Walle for Nigeria.
authors.forename: T L
authors.initials: TL
authors.lastname: Devis