@misc{indiciaeaaac2a60ce4c,
  title = {Water-quality assessment of the Potomac River Basin; water-quality and selected spatial data, 1992-96},
  author = {A.L. Derosier and J. W. Brakebill and J. M. Denis and S.K. Kelley},
  year = {1998},
  doi = {10.3133/ofr98180},
  url = {https://pubs.usgs.gov/publication/ofr98180},
  note = {Source identifier: ofr98180}
}