@misc{indiciae9421c85dfe16,
  title = {The relation between composition and swelling in clays},
  author = {Margaret D. Foster},
  year = {1955},
  doi = {10.3133/ofr5491},
  url = {https://pubs.usgs.gov/publication/ofr5491},
  note = {Source identifier: ofr5491}
}