@misc{indiciae2729c087315b,
  title = {Physiographic diagrams of Mount St. Helens, Washington, showing changes in its summit crater, 1984},
  author = {Tau Rho Alpha and Bobbie Myers},
  year = {1986},
  doi = {10.3133/mf1906},
  url = {https://pubs.usgs.gov/publication/mf1906},
  note = {Source identifier: mf1906}
}