@misc{indiciae573719dc1f46,
  title = {Map and tables showing preliminary results of potassium-argon age studies in the Circle Quadrangle, Alaska, with a compilation of earlier dating work},
  author = {Frederic H. Wilson and Nora B. Shew},
  year = {1981},
  doi = {10.3133/ofr81889},
  url = {https://pubs.usgs.gov/publication/ofr81889},
  note = {Source identifier: ofr81889}
}