@misc{indiciae09f43ed4a882,
  title = {Volcanoes and vulcanism: exhibit posters on volcanic phenomena of special interest to the Geologic Division},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1970},
  doi = {10.3133/70138184},
  url = {https://pubs.usgs.gov/publication/70138184},
  note = {Source identifier: 70138184}
}