@misc{indiciae48955b3fecd1,
  title = {Potentiometric surface of the Aquia Aquifer in southern Maryland during the Fall of 1986},
  author = {F. K. Mack and D. C. Andreasen and S. E. Curtin and J. C. Wheeler},
  year = {1987},
  doi = {10.3133/wri874214},
  url = {https://pubs.usgs.gov/publication/wri874214},
  note = {Source identifier: wri874214}
}