@misc{indiciae4ee85ecbfeb5,
  title = {Physical and chemical properties of the Potomac River and environs, August 1978},
  author = {Richard E. Smith and Raynol E. Herndon},
  year = {1980},
  doi = {10.3133/ofr80746},
  url = {https://pubs.usgs.gov/publication/ofr80746},
  note = {Source identifier: ofr80746}
}