@misc{indiciaebc346dc33aee,
  title = {Potentiometric surface of the upper Patapsco Aquifer in southern Maryland, September 1994},
  author = {Stephen E. Curtin and Frederick K. Mack and David C. Andreasen},
  year = {1995},
  doi = {10.3133/ofr95745},
  url = {https://pubs.usgs.gov/publication/ofr95745},
  note = {Source identifier: ofr95745}
}