@misc{indiciaee71118f23db1,
  title = {Thorium investigations, 1950-52, Wet Mountains, Colorado},
  author = {Robert Adam Christman and A. M. Heyman and L. F. Dellwig and G. B. Gott},
  year = {1953},
  doi = {10.3133/cir290},
  url = {https://pubs.usgs.gov/publication/cir290},
  note = {Source identifier: cir290}
}