@misc{indiciae7ca1a7e6a4b9,
  title = {Pleistocene-Recent boundary in the Rocky Mountain region},
  author = {Charles Burton Hunt},
  year = {1953},
  doi = {10.3133/b996a},
  url = {https://pubs.usgs.gov/publication/b996A},
  note = {Source identifier: b996A}
}