@misc{indiciaecb1e3e400696,
  title = {Aquatic toxicity, salinity and water hardness},
  author = {I.R. Hardin and P. V. Winger and P. J. Lasier and M.S. Brewer},
  year = {1995},
  url = {https://pubs.usgs.gov/publication/5223372},
  note = {Source identifier: 5223372}
}