@misc{indiciae4a008d2a1858,
  title = {Mineral resources of the Terry Badlands Wilderness Study Area, Prairie and Custer counties, Montana},
  author = {Judith S. Gassaway and M. I. Toth and Viki Bankey and M. D. Kleinkopf and J. D. Causey},
  year = {1987},
  doi = {10.3133/b1722b},
  url = {https://pubs.usgs.gov/publication/b1722B},
  note = {Source identifier: b1722B}
}