@misc{indiciae1d7cb4c1b0ed,
  title = {Analysis of water-quality data and sampling programs at selected sites in north-central Colorado},
  author = {D. K. Mueller},
  year = {1990},
  doi = {10.3133/wri904005},
  url = {https://pubs.usgs.gov/publication/wri904005},
  note = {Source identifier: wri904005}
}