@misc{indiciae07e7e902a264,
  title = {Geology and pegmatites of part of the Fourmile area, Custer County, South Dakota},
  author = {Andrew J. Lang and Jack Allison Redden},
  year = {1953},
  doi = {10.3133/cir245},
  url = {https://pubs.usgs.gov/publication/cir245},
  note = {Source identifier: cir245}
}