@misc{indiciae653d8bbd2bed,
  title = {Tin-bearing pegmatites of the Tinton district, Lawrence County, South Dakota, a preliminary report},
  author = {Ward Smith and Lincoln R. Page},
  year = {1941},
  doi = {10.3133/b922t},
  url = {https://pubs.usgs.gov/publication/b922T},
  note = {Source identifier: b922T}
}