@misc{indiciae13ef4d05a0f3,
  title = {Water quality of the Potomac River estuary at Washington, D.C.},
  author = {W. H. Durum and Walter Basil Langbein},
  year = {1966},
  doi = {10.3133/cir529a},
  url = {https://pubs.usgs.gov/publication/cir529A},
  note = {Source identifier: cir529A}
}