@misc{indiciaefd3f50777c7e,
  title = {Documentation of a multiple-technique computer program for plotting major-ion composition of natural waters},
  author = {L. I. Briel},
  year = {1993},
  doi = {10.3133/ofr9374},
  url = {https://pubs.usgs.gov/publication/ofr9374},
  note = {Source identifier: ofr9374}
}