@misc{indiciae20cfd3a19358,
  title = {An interdisciplinary assessment of regional-scale nonpoint source ground-water vulnerability: Theory and application},
  author = {Richard L. Bernknopf and Laura B. Dinitz and Keith Loague},
  year = {2001},
  doi = {10.3133/pp1645},
  url = {https://pubs.usgs.gov/publication/pp1645},
  note = {Source identifier: pp1645}
}