@misc{indiciae7c6a4a802b3d,
  title = {The petrology of Umnak and Bogoslof Islands, Alaska},
  author = {F.M. Byers},
  year = {1955},
  doi = {10.3133/ofr5522},
  url = {https://pubs.usgs.gov/publication/ofr5522},
  note = {Source identifier: ofr5522}
}