@misc{indiciae665efb647c87,
  title = {Kaolin of early Eocene age in North Dakota},
  author = {W.E. Benson},
  year = {1954},
  doi = {10.1126/science.119.3090.387},
  url = {https://pubs.usgs.gov/publication/70010505},
  note = {Source identifier: 70010505}
}