@misc{indiciaec77f3201355d,
  title = {Study and interpretation of the chemical characteristics of natural water},
  author = {John David Hem},
  year = {1959},
  doi = {10.3133/wsp1473\_ed1},
  url = {https://pubs.usgs.gov/publication/wsp1473\_ed1},
  note = {Source identifier: wsp1473\_ed1}
}