@misc{indiciae595663b0e607,
  title = {Water-quality assessment of the Cambrian-Ordovician aquifer system in the northern Midwest, United States},
  author = {John T. Wilson},
  year = {2012},
  doi = {10.3133/sir20115229},
  url = {https://pubs.usgs.gov/publication/sir20115229},
  note = {Source identifier: sir20115229}
}