@misc{indiciae6647ba58932c,
  title = {Our mineral supplies--Talc and soapstone},
  author = {J. S. Diller},
  year = {1919},
  doi = {10.3133/b666i},
  url = {https://pubs.usgs.gov/publication/b666I},
  note = {Source identifier: b666I}
}