@misc{indiciae1303a2ee6213,
  title = {Industrial clays, other than potential sources of alumina of the Columbia Basin},
  author = {I. G. Sohn},
  year = {1952},
  doi = {10.3133/cir158},
  url = {https://pubs.usgs.gov/publication/cir158},
  note = {Source identifier: cir158}
}