@misc{indiciaea8af0a19b46c,
  title = {Determination of uranium in natural waters},
  author = {Franklin Butt Barker and J. O. Johnson and K.W. Edwards and B.P. Robinson},
  year = {1965},
  doi = {10.3133/wsp1696c},
  url = {https://pubs.usgs.gov/publication/wsp1696C},
  note = {Source identifier: wsp1696C}
}