@misc{indiciae280b0444b8a6,
  title = {Drinking-water quality and variations in water levels in the fractured crystalline-rock aquifer, west-central Jefferson County, Colorado},
  author = {Dennis C. Hall and Carl J. Johnson},
  year = {1979},
  doi = {10.3133/wri7994},
  url = {https://pubs.usgs.gov/publication/wri7994},
  note = {Source identifier: wri7994}
}