@misc{indiciaee36289758200,
  title = {Preliminary report on the Molalla high-alumina clay deposit near Molalla, Clackmas County, Oregon},
  author = {Robert L. Nichols},
  year = {1944},
  doi = {10.3133/ofr4420},
  url = {https://pubs.usgs.gov/publication/ofr4420},
  note = {Source identifier: ofr4420}
}