@misc{indiciae8fb092036ac1,
  title = {Preliminary geologic and structure map of the northeast part of the Burdock quadrangle, Fall River and Custer counties, South Dakota},
  author = {R. W. Schnabel and L.J. Charlesworth},
  year = {1957},
  doi = {10.3133/tem1056},
  url = {https://pubs.usgs.gov/publication/tem1056},
  note = {Source identifier: tem1056}
}