@misc{indiciaeb5a4c59c28b8,
  title = {Sample preparation procedures for the analysis of clay minerals by X-ray diffraction},
  author = {P. L. Hauff and H.C. Starkey and P.D. Blackmon and D.R. Pevear},
  year = {1984},
  doi = {10.3133/ofr82934},
  url = {https://pubs.usgs.gov/publication/ofr82934},
  note = {Source identifier: ofr82934}
}