@misc{indiciaec09f04afb5bb,
  title = {Hydrogeology of the Fort Union coal region, eastern Montana},
  author = {J.D. Stoner and B. D. Lewis},
  year = {1980},
  doi = {10.3133/i1236},
  url = {https://pubs.usgs.gov/publication/i1236},
  note = {Source identifier: i1236}
}