@misc{indiciae437a1d51dd28,
  title = {Water-quality assessment of the lower Susquehanna River basin, Pennsylvania and Maryland: Environmental setting},
  author = {Dennis W. Risser and Steven F. Siwiec},
  year = {1996},
  doi = {10.3133/wri944245},
  url = {https://pubs.usgs.gov/publication/wri944245},
  note = {Source identifier: wri944245}
}