@misc{indiciae181bb2acce97,
  title = {Map showing distribution pattern of zinc from samples of -80 mesh stream sediment, northern Sonora, Mexico},
  author = {Glenn H. Allcott and George VanTrump and Jose LeeMoreno and Arthur Gomez},
  year = {1977},
  doi = {10.3133/ofr77337},
  url = {https://pubs.usgs.gov/publication/ofr77337},
  note = {Source identifier: ofr77337}
}