@misc{indiciae748cd79aff75,
  title = {Geology and uranium deposits of the Ralston Buttes district, Jefferson County, Colorado},
  author = {Douglas M. Sheridan and Charles Henry Maxwell and Arden Leroy Albee and Richard Van Horn},
  year = {1967},
  doi = {10.3133/pp520},
  url = {https://pubs.usgs.gov/publication/pp520},
  note = {Source identifier: pp520}
}