@misc{indiciae4ac28193c8ea,
  title = {Preliminary geologic map of the Hultz Draw Quadrangle, Sheridan County, Wyoming},
  author = {E. N. Hinrichs},
  year = {1979},
  doi = {10.3133/mf1055},
  url = {https://pubs.usgs.gov/publication/mf1055},
  note = {Source identifier: mf1055}
}