@misc{indiciaebb7d0bf049ef,
  title = {Geology and ground water resources of the middle peninsula, Virginia},
  author = {Dagfin John Cederstrom},
  year = {1968},
  doi = {10.3133/ofr6937},
  url = {https://pubs.usgs.gov/publication/ofr6937},
  note = {Source identifier: ofr6937}
}