@misc{indiciaee5855dd16adc,
  title = {Map showing cumulative thickness of sandstone in the Judith River Formation, Montana},
  author = {Richard D. Feltis},
  year = {1982},
  doi = {10.3133/wri824038},
  url = {https://pubs.usgs.gov/publication/wri824038},
  note = {Source identifier: wri824038}
}