@misc{53401,
  title      = {Primera cartilla chol},
  year       = {1953},
  country    = {Mexico [MX]},
  lgcode     = {Chol [ctu]},
  macro_area = {North America},
  sil_id     = {49329},
  src        = {sil16},
  subject    = {Primers [Zprm]}
}