@misc{indiciaecb4bf55aadb3,
  title = {Preliminary Report on the Cowlitz High-Alumina Clay Deposit Near Castle Rock, Cowlitz County, Washington},
  author = {Robert L. Nichols},
  year = {1945},
  doi = {10.3133/ofr4512},
  url = {https://pubs.usgs.gov/publication/ofr4512},
  note = {Source identifier: ofr4512}
}