@misc{indiciae7b68e7695feb,
  title = {Selected bibliography of andalusite, kyanite, sillimanite, dumortierite topaz, and pyrophyllite in the United States},
  author = {Agnes B. Grametbaur},
  year = {1959},
  doi = {10.3133/b1019n},
  url = {https://pubs.usgs.gov/publication/b1019N},
  note = {Source identifier: b1019N}
}