@misc{indiciae8dd0ad9d7ec3,
  title = {The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer, September 1982 and September 2001 in Southern Maryland},
  author = {Stephen E. Curtin and David C. Andreasen and Judith C. Wheeler},
  year = {2002},
  doi = {10.3133/ofr02447},
  url = {https://pubs.usgs.gov/publication/ofr02447},
  note = {Source identifier: ofr02447}
}