@book{lebeuf1959,
  address   = {Paris},
  author    = {Lebeuf, A. M. D.},
  key       = {Lebeuf (1959)},
  publisher = {Paris: Presses Universitaires de France; International African Inst. (IAI)},
  series    = {Monographies ethnologiques africaines; Ethnographic survey of Africa, Western Africa, French series},
  title     = {Les populations du Tchad},
  volume    = {8},
  year      = {1959}
}