@misc{indiciaefd7d8a8e9f94,
  title = {Predicting ground-water vulnerability to nitrate in the Puget Sound Basin},
  author = {M. L. Erwin and A. J. Tesoriero},
  year = {1997},
  doi = {10.3133/fs06197},
  url = {https://pubs.usgs.gov/publication/fs06197},
  note = {Source identifier: fs06197}
}