@misc{indiciae4f892c18856a,
  title = {U.S. Geological Survey ground-water studies in Colorado},
  author = {J.B. Weeks},
  year = {1988},
  doi = {10.3133/ofr88109},
  url = {https://pubs.usgs.gov/publication/ofr88109},
  note = {Source identifier: ofr88109}
}