@misc{indiciaefc7afef86df3,
  title = {Methods for comparing water-quality conditions among National Water-Quality Assessment Study Units, 1992-1995},
  author = {Robert J. Gilliom and David K. Mueller and Lisa H. Nowell},
  year = {1998},
  doi = {10.3133/ofr97589},
  url = {https://pubs.usgs.gov/publication/ofr97589},
  note = {Source identifier: ofr97589}
}