@misc{indiciae20408414941f,
  title = {Fumarole emissions at Mount St. Helens volcano, June 1980 to October 1981: Degassing of a magma-hydrothermal system},
  author = {T.M. Gerlach and T. J. Casadevall},
  year = {1986},
  url = {https://pubs.usgs.gov/publication/70015683},
  note = {Source identifier: 70015683}
}