@misc{indiciaefbcdb24aa2c6,
  title = {A tabulation of K-Ar, Rb-Sr and Pb-alpha ages obtained for materials within the United States (including Alaska and Hawaii) during the years 1956 through 1964},
  author = {Richard F. Marvin},
  year = {1974},
  doi = {10.3133/ofr741068},
  url = {https://pubs.usgs.gov/publication/ofr741068},
  note = {Source identifier: ofr741068}
}