@misc{indiciae0c5245f550f8,
  title = {Geology and pegmatites of the Fourmile quadrangle, Black Hills, South Dakota},
  author = {Jack A. Redden},
  year = {1959},
  doi = {10.3133/tei428},
  url = {https://pubs.usgs.gov/publication/tei428},
  note = {Source identifier: tei428}
}