@misc{indiciaea907d302ef60,
  title = {Mineral resource potential and geology of the Black Hills National Forest, South Dakota and Wyoming with a section on salable commodities},
  author = {Ed DeWitt and J. A. Redden and A.B. Wilson and David Buscher and J. S. Dersch},
  year = {1986},
  doi = {10.3133/b1580},
  url = {https://pubs.usgs.gov/publication/b1580},
  note = {Source identifier: b1580}
}