@misc{indiciaef34d69625241,
  title = {Potentiometric surfaces of November 1989 and declines in the potentiometric surfaces between November 1982 and November 1989 for the Black Creek and Middendorf Aquifers in South Carolina},
  author = {Whitney J. Stringfield and B. G. Campbell},
  year = {1993},
  doi = {10.3133/wri924000},
  url = {https://pubs.usgs.gov/publication/wri924000},
  note = {Source identifier: wri924000}
}