@misc{indiciae7d94702d1a69,
  title = {Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska},
  author = {Robert Roy Coats},
  year = {1959},
  doi = {10.3133/b1028o},
  url = {https://pubs.usgs.gov/publication/b1028O},
  note = {Source identifier: b1028O}
}