@misc{indiciae8df16d43bd81,
  title = {Geology of the Hardin area, Big Horn and Yellowstone Counties, Montana},
  author = {Paul W. Richards and C.P. Rogers},
  year = {1951},
  doi = {10.3133/om111},
  url = {https://pubs.usgs.gov/publication/om111},
  note = {Source identifier: om111}
}