@misc{indiciae50ea75bfdef5,
  title = {Quality of Delaware River water at Trenton, New Jersey},
  author = {Leo T. McCarthy and Walter B. Keighton},
  year = {1964},
  doi = {10.3133/wsp1779x},
  url = {https://pubs.usgs.gov/publication/wsp1779X},
  note = {Source identifier: wsp1779X}
}