@misc{indiciaedda18856ba66,
  title = {The distribution of submersed aquatic vegetation and water lettuce in the fresh and oligohaline tidal Potomac River, 2007},
  author = {Sarah Hunter Campbell and Nancy B. Rybicki and Edward R. Schenk},
  year = {2015},
  doi = {10.3133/ofr20141259},
  url = {https://pubs.usgs.gov/publication/ofr20141259},
  note = {Source identifier: ofr20141259}
}