@misc{indiciae26b93ae5d18c,
  title = {Maps showing areas in the San Francisco Bay region where nitrate, boron, and dissolved solids in ground water may influence local or regional development},
  author = {D.A. Webster},
  year = {1972},
  doi = {10.3133/mf432},
  url = {https://pubs.usgs.gov/publication/mf432},
  note = {Source identifier: mf432}
}