@misc{indiciaea98b84674646,
  title = {Potentiometric surface of the Sparta and Memphis aquifers in eastern Arkansas, April through July 1993},
  author = {Paul W. Westerfield},
  year = {1995},
  doi = {10.3133/wri954000},
  url = {https://pubs.usgs.gov/publication/wri954000},
  note = {Source identifier: wri954000}
}