@misc{indiciae3bf63f76fde3,
  title = {Hydrology of the Mississippi River valley alluvial aquifer, south-central United States},
  author = {D. J. Ackerman},
  year = {1996},
  doi = {10.3133/pp1416d},
  url = {https://pubs.usgs.gov/publication/pp1416D},
  note = {Source identifier: pp1416D}
}