@misc{indiciae20c5a8a51a25,
  title = {Physical and chemical description of Birch Creek - a travertine depositing stream, Inyo County, California},
  author = {Keith V. Slack},
  year = {1967},
  doi = {10.3133/pp549a},
  url = {https://pubs.usgs.gov/publication/pp549A},
  note = {Source identifier: pp549A}
}