@misc{indiciaedc6e13af5cdc,
  title = {Hydrogeology and water quality of sand and gravel aquifers in McHenry County, Illinois, 2009–14, and comparison to conditions in 1979},
  author = {Amy M. Gahala},
  year = {2017},
  doi = {10.3133/sir20175112},
  url = {https://pubs.usgs.gov/publication/sir20175112},
  note = {Source identifier: sir20175112}
}