@misc{indiciae249202c04a70,
  title = {Logarithmic nomograph for water-analysis data},
  author = {R.C. Vorhis},
  year = {1955},
  doi = {10.3133/ofr55185},
  url = {https://pubs.usgs.gov/publication/ofr55185},
  note = {Source identifier: ofr55185}
}