@misc{indiciaeb32ec8b8c68d,
  title = {Annotated bibliography; volcanic gas emissions and their effect on ambient air character},
  author = {A. J. Sutton and T. Elias},
  year = {1993},
  doi = {10.3133/ofr93551e},
  url = {https://pubs.usgs.gov/publication/ofr93551E},
  note = {Source identifier: ofr93551E}
}