@misc{indiciaec769220ed9ac,
  title = {On secondary enlargements of mineral fragments in certain rocks},
  author = {Roland Duer Irving and Charles Richard Van Hise},
  year = {1884},
  doi = {10.3133/b8},
  url = {https://pubs.usgs.gov/publication/b8},
  note = {Source identifier: b8}
}