@misc{indiciaeae65aaa4ad5f,
  title = {Water-quality data-collection activities in Colorado and Ohio; Phase III, evaluation of existing data for use in assessing regional water-quality conditions and trends},
  author = {J. Michael Norris and Janet Hren and Donna N. Myers and Thomas H. Chaney and Carolyn J. Oblinger Childress},
  year = {1990},
  doi = {10.3133/ofr89391},
  url = {https://pubs.usgs.gov/publication/ofr89391},
  note = {Source identifier: ofr89391}
}