@misc{indiciaeb0a186a33888,
  title = {Use of cesium-137 in the determination of cation exchange capacity},
  author = {W.A. Beetem and Victor J. Janzer and J.S. Wahlberg},
  year = {1962},
  doi = {10.3133/b1140b},
  url = {https://pubs.usgs.gov/publication/b1140B},
  note = {Source identifier: b1140B}
}