@phdthesis{582224,
  author     = {Welch, James W.},
  pages      = {xi+415},
  school     = {University of Cambridge},
  title      = {The Isoko Clans of the Niger Delta},
  year       = {1937},
  hhtype     = {ethnographic},
  inlg       = {English [eng]},
  lgcode     = {Isoko [iso] (autotranslated from Maho's coding system)},
  macro_area = {Africa},
  src        = {hh}
}