@misc{indiciaec09597285aea,
  title = {Uranium in the Cochetopa District, Colorado, in relation to the Oligocene erosion surface},
  author = {Jerry Chipman Olson},
  year = {1976},
  doi = {10.3133/ofr76222},
  url = {https://pubs.usgs.gov/publication/ofr76222},
  note = {Source identifier: ofr76222}
}