@misc{indiciaea005dc4ad8bf,
  title = {Status of shallow-aquifer mapping in the Northern Front Range Area, Colorado},
  author = {Stanley G. Robson},
  year = {2001},
  doi = {10.3133/fs06900},
  url = {https://pubs.usgs.gov/publication/fs06900},
  note = {Source identifier: fs06900}
}