@misc{indiciae44d102b509f0,
  title = {Geology and ground water in Napa and Sonoma Valleys, Napa and Sonoma Counties, California},
  author = {Fred Kunkel and Joseph Edwin Upson},
  year = {1960},
  doi = {10.3133/wsp1495},
  url = {https://pubs.usgs.gov/publication/wsp1495},
  note = {Source identifier: wsp1495}
}