@misc{indiciae5e238d366b23,
  title = {Mineral and chemical variations within an ash-flow sheet from Aso caldera, Southwestern Japan},
  author = {P. W. Lipman},
  year = {1967},
  doi = {10.1007/bf00371528},
  url = {https://pubs.usgs.gov/publication/70010518},
  note = {Source identifier: 70010518}
}