@misc{indiciaedc789ad337da,
  title = {Minerals of the montmorillonite group, their origin and relation to soils and clays},
  author = {C. S. Ross and S. B. Hendricks},
  year = {1945},
  doi = {10.3133/pp205b},
  url = {https://pubs.usgs.gov/publication/pp205B},
  note = {Source identifier: pp205B}
}