@misc{indiciaea52f5b91573b,
  title = {A preliminary determination of the age of some uranium ores of the Colorado Plateaus by the lead-uranium method},
  author = {Lorin Rollins Stieff and T. W. Stern and R.G. Milkey},
  year = {1953},
  doi = {10.3133/cir271},
  url = {https://pubs.usgs.gov/publication/cir271},
  note = {Source identifier: cir271}
}