@misc{indiciaeede344f39491,
  title = {Statistical analysis of nitrate in ground water, West Salt River Valley, Arizona},
  author = {Andy E. Long and James G. Brown and Dorinda J. Gellenbeck},
  year = {1997},
  doi = {10.3133/wri974185},
  url = {https://pubs.usgs.gov/publication/wri974185},
  note = {Source identifier: wri974185}
}