@misc{indiciaea76e3631cdd4,
  title = {Groundwater site identification indexes for Washington, D.C., Baltimore City, and the counties of Maryland},
  author = {Andrew E. LaMotte},
  year = {2010},
  doi = {10.3133/ds576},
  url = {https://pubs.usgs.gov/publication/ds576},
  note = {Source identifier: ds576}
}