@unpublished{Haas-1975,
  author     = {Haas, Mary},
  school     = {University of California, Berkeley},
  title      = {Natchez materials},
  type       = {manuscript},
  year       = {1975},
  iso_code   = {ncz},
  olac_field = {morphology; general_linguistics; typology; syntax},
  wals_code  = {nat}
}