@misc{indiciae24a932fce47c,
  title = {Areas of shallow water table, Prince Georges County, Maryland},
  author = {Claire A. Richardson},
  year = {1976},
  doi = {10.3133/ofr76194},
  url = {https://pubs.usgs.gov/publication/ofr76194},
  note = {Source identifier: ofr76194}
}