@misc{indiciae273b66ca7abb,
  title = {A comparison of gas geochemistry of fumaroles in the 1912 ash-flow sheet and on active stratovolcanoes, Katmai National Park, Alaska},
  author = {D.S. Sheppard and C. J. Janik and T. E. C. Keith},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70017258},
  note = {Source identifier: 70017258}
}