@misc{indiciaed43a17317bac,
  title = {Map of California showing distribution of selenium concentrations in wells sampled by the U.S. Geological Survey, 1975-85},
  author = {Kristin D. Evenson and J. M. Neil},
  year = {1986},
  doi = {10.3133/ofr8672},
  url = {https://pubs.usgs.gov/publication/ofr8672},
  note = {Source identifier: ofr8672}
}