@misc{indiciae5e7c8d4cc35d,
  title = {Map showing the potentiometric surface of the Magothy aquifer in southern Maryland, August 1980},
  author = {Frederick K. Mack and Judith C. Wheeler and Stephen E. Curtin},
  year = {1981},
  doi = {10.3133/ofr81633},
  url = {https://pubs.usgs.gov/publication/ofr81633},
  note = {Source identifier: ofr81633}
}