@misc{indiciae74408bc7e36c,
  title = {Ammonia in ground water from the Mississippi River alluvium, Fort Madison, Iowa},
  author = {S. Mike Linhart},
  year = {2001},
  doi = {10.3133/wri014062},
  url = {https://pubs.usgs.gov/publication/wri014062},
  note = {Source identifier: wri014062}
}