@misc{indiciae5432cedb3cb4,
  title = {Redox Conditions in Selected Principal Aquifers of the United States},
  author = {P.B. McMahon and T.K. Cowdery and F. H. Chapelle and B.C. Jurgens},
  year = {2009},
  doi = {10.3133/fs20093041},
  url = {https://pubs.usgs.gov/publication/fs20093041},
  note = {Source identifier: fs20093041}
}