@misc{indiciaeac9f3c07ad0b,
  title = {Fossil and active fumaroles in the 1912 eruptive deposits, Valley of ten thousand smokes, Alaska},
  author = {T. E. C. Keith},
  year = {1991},
  url = {https://pubs.usgs.gov/publication/70016846},
  note = {Source identifier: 70016846}
}