@misc{indiciae5452390390ba,
  title = {Methods for determination of radioactive substances in water and fluvial sediments},
  author = {Leland Lincoln Thatcher and Victor J. Janzer and Kenneth W. Edwards},
  year = {1976},
  doi = {10.3133/ofr76560},
  url = {https://pubs.usgs.gov/publication/ofr76560},
  note = {Source identifier: ofr76560}
}