@misc{indiciaec605ac3c4b6b,
  title = {Chemical quality of public water supplies of the United States and Puerto Rico, 1962},
  author = {Charles N. Durfor and Edith Becker},
  year = {1964},
  doi = {10.3133/ha200},
  url = {https://pubs.usgs.gov/publication/ha200},
  note = {Source identifier: ha200}
}