@misc{indiciae0751ff244b3d,
  title = {Long-term water-quality trends in Delaware streams},
  author = {Stuart W. McKenzie},
  year = {1976},
  doi = {10.3133/ofr7671},
  url = {https://pubs.usgs.gov/publication/ofr7671},
  note = {Source identifier: ofr7671}
}