@misc{indiciaefdb756e2e591,
  title = {Quality of ground water in Pleistocene and Holocene subunits of the Mississippi River Valley alluvial aquifer, 1998},
  author = {Gerard Gonthier},
  year = {2003},
  doi = {10.3133/wri034202},
  url = {https://pubs.usgs.gov/publication/wri034202},
  note = {Source identifier: wri034202}
}