@misc{indiciaefaeefadefc8e,
  title = {Geology and water-yielding characteristics of rocks of the northern Powder River basin, southeastern Montana},
  author = {Barney D. Lewis and Robert S. Roberts},
  year = {1978},
  doi = {10.3133/i847d},
  url = {https://pubs.usgs.gov/publication/i847D},
  note = {Source identifier: i847D}
}