@misc{indiciae4c622bcfc074,
  title = {Base of fresh ground water approximately 3,000 micromhos, in the San Joaquin Valley, California},
  author = {R. W. Page},
  year = {1971},
  doi = {10.3133/ofr71223},
  url = {https://pubs.usgs.gov/publication/ofr71223},
  note = {Source identifier: ofr71223}
}