@misc{indiciae4478b38f82d6,
  title = {Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 1999},
  author = {Stephen E. Curtin and David C. Andreasen and Judith C. Wheeler},
  year = {2001},
  doi = {10.3133/ofr01204},
  url = {https://pubs.usgs.gov/publication/ofr01204},
  note = {Source identifier: ofr01204}
}