@misc{indiciae515e91aaec34,
  title = {Potassium-argon project report for the year 1958-1959},
  author = {Henry Faul and E. Jager and R.H. Robinson and H.H. Thomas},
  year = {1959},
  doi = {10.3133/ofr5939},
  url = {https://pubs.usgs.gov/publication/ofr5939},
  note = {Source identifier: ofr5939}
}