@misc{indiciaebf9aab7fa80c,
  title = {Landslides in shale at Rapid City, South Dakota},
  author = {Dwight R. Crandell},
  year = {1951},
  doi = {10.3133/ofr5229},
  url = {https://pubs.usgs.gov/publication/ofr5229},
  note = {Source identifier: ofr5229}
}