@misc{indiciae82f435fde426,
  title = {Summary of pre-1980 tephra-fall deposits erupted from Mount St. Helens, Washington State, USA},
  author = {D. R. Mullineaux},
  year = {1986},
  doi = {10.1007/bf01073510},
  url = {https://pubs.usgs.gov/publication/70014980},
  note = {Source identifier: 70014980}
}