@misc{indiciae594644a801e9,
  title = {Geology of Badlands National Park: A preliminary report},
  author = {Philip W. Stoffer},
  year = {2003},
  doi = {10.3133/ofr0335},
  url = {https://pubs.usgs.gov/publication/ofr0335},
  note = {Source identifier: ofr0335}
}