@misc{indiciae8dd02822bc0c,
  title = {Occurrence and distribution of iron, manganese, and selected trace elements in ground water in the glacial aquifer system of the northern United States},
  author = {George E. Groschen and Terri Arnold and William S. Morrow and Kelly L. Warner},
  year = {2009},
  doi = {10.3133/sir20095006},
  url = {https://pubs.usgs.gov/publication/sir20095006},
  note = {Source identifier: sir20095006}
}