@misc{indiciae5287ec48c4b7,
  title = {Approximate depth to the water table, Montgomery County, Maryland},
  author = {Claire A. Richardson},
  year = {1977},
  doi = {10.3133/ofr76881},
  url = {https://pubs.usgs.gov/publication/ofr76881},
  note = {Source identifier: ofr76881}
}