@misc{indiciaecaa9af242b99,
  title = {Chemical quality of ground water for public supply in the Phoenix area, Arizona},
  author = {W. R. Osterkamp},
  year = {1974},
  doi = {10.3133/i845f},
  url = {https://pubs.usgs.gov/publication/i845F},
  note = {Source identifier: i845F}
}