@misc{indiciae1ff27346762a,
  title = {Water-level maps of the Mississippi River Valley alluvial aquifer in eastern Arkansas, 1989},
  author = {Paul W. Westerfield and Gerard Gonthier},
  year = {1993},
  doi = {10.3133/wri924120},
  url = {https://pubs.usgs.gov/publication/wri924120},
  note = {Source identifier: wri924120}
}