@misc{indiciaef633a5a7b458,
  title = {Accretionary lapilli in altered tuffs associated with coal beds},
  author = {B.F. Bohor and Don M. Triplehorn},
  year = {1984},
  doi = {10.1306/212f8409-2b24-11d7-8648000102c1865d},
  url = {https://pubs.usgs.gov/publication/70013180},
  note = {Source identifier: 70013180}
}