@misc{indiciae95c753f5e729,
  title = {Statistical summaries of water-quality data for two coal areas of Jackson County, Colorado},
  author = {Gerhard Kuhn},
  year = {1982},
  doi = {10.3133/ofr82121},
  url = {https://pubs.usgs.gov/publication/ofr82121},
  note = {Source identifier: ofr82121}
}