@misc{indiciae67f7fcc91bce,
  title = {Chemical analyses for selected wells in San Joaquin County and part of Contra Costa County, California},
  author = {Gail L. Keeter},
  year = {1980},
  doi = {10.3133/ofr80420},
  url = {https://pubs.usgs.gov/publication/ofr80420},
  note = {Source identifier: ofr80420}
}