@misc{indiciaeff22aff400a6,
  title = {Mineral resources of the Sleeping Giant Wilderness Study Area, Lewis and Clark County, Montana},
  author = {R. G. Tysdal and M.W. Reynolds and R. R. Carlson and M. D. Kleinkopf and L. C. Rowan and T. J. Peters},
  year = {1990},
  doi = {10.3133/ofr90410},
  url = {https://pubs.usgs.gov/publication/ofr90410},
  note = {Source identifier: ofr90410}
}