@misc{indiciae2ea173fde495,
  title = {Map showing construction materials in the Henrys Lake quadrangle, Idaho and Montana},
  author = {I. J. Witkind},
  year = {1972},
  doi = {10.3133/i781f},
  url = {https://pubs.usgs.gov/publication/i781F},
  note = {Source identifier: i781F}
}