@misc{indiciaec44fe2be5825,
  title = {Precipitation-chemistry data at selected sites in northwestern Colorado, 1980-94},
  author = {A.J. Ranalli},
  year = {1997},
  doi = {10.3133/ofr97112},
  url = {https://pubs.usgs.gov/publication/ofr97112},
  note = {Source identifier: ofr97112}
}