@book{Schadeberg-1981b,
  address    = {Hamburg},
  author     = {Schadeberg, Thilo C.},
  publisher  = {Helmut Buske},
  title      = {A Survey of Kordofanian. Volume 1: The Heiban Group},
  year       = {1981},
  iso_code   = {mor},
  olac_field = {typology; general_linguistics; phonology; phonetics},
  wals_code  = {mro}
}