@misc{indiciaed4c3b15e3b79,
  title = {Reconnaissance geologic map of Atka and Amlia islands, Alaska},
  author = {James R. Hein and Hugh McLean and T.L. Vallier},
  year = {1981},
  doi = {10.3133/ofr81159},
  url = {https://pubs.usgs.gov/publication/ofr81159},
  note = {Source identifier: ofr81159}
}