@misc{indiciae4c4ac44f3f3e,
  title = {Report, of committee on basic research in the field of. industrial minerals and rocks},
  author = {G.L. Gillson and R. H. Jahns},
  year = {1947},
  doi = {10.2113/gsecongeo.42.8.737},
  url = {https://pubs.usgs.gov/publication/70206917},
  note = {Source identifier: 70206917}
}