@misc{557148,
  address      = {Dallas},
  author       = {ISO 639-3 Registration Authority},
  howpublished = {https://iso639-3.sil.org/request/2017-021},
  number       = {2017-021},
  publisher    = {SIL International},
  title        = {Change Request Number 2017-021: rejected split [maa], adopted create [pbm], rejected create [wmz] (2018-01-23)},
  url          = {https://iso639-3.sil.org/sites/iso639-3/files/change_requests/2017/2017-021.pdf},
  year         = {2017},
  hhtype       = {overview},
  lgcode       = {San Jerónimo Tecóatl Mazatec [maa], Puebla Mazatec [pbm], Mazateco occidental [wmz]},
  macro_area   = {North America},
  src          = {iso6393}
}