@misc{indiciaedd304d1ca100,
  title = {Monitoring regional ground-water quality; statistical considerations and description of a monitoring network in Kansas},
  author = {T.B. Spruill},
  year = {1990},
  doi = {10.3133/wri904159},
  url = {https://pubs.usgs.gov/publication/wri904159},
  note = {Source identifier: wri904159}
}