@misc{indiciae6d120665dd9c,
  title = {Map and table showing radiometric ages of rocks in southwestern Alaska},
  author = {Nora B. Shew and Frederic H. Wilson},
  year = {1981},
  doi = {10.3133/ofr81886},
  url = {https://pubs.usgs.gov/publication/ofr81886},
  note = {Source identifier: ofr81886}
}