@misc{indiciaebfcde1116166,
  title = {Water-quality assessment of the Potomac River Basin: Basin description and analysis of available nutrient data, 1970-90},
  author = {J. D. Blomquist and G. T. Fisher and J. M. Denis and J. W. Brakebill and W. H. Werkheiser},
  year = {1996},
  doi = {10.3133/wri954221},
  url = {https://pubs.usgs.gov/publication/wri954221},
  note = {Source identifier: wri954221}
}