@misc{indiciae2b86f8a05d30,
  title = {Dissolved silica in the tidal Potomac River and Estuary, 1979-81 water years},
  author = {Stephen F. Blanchard},
  year = {1988},
  doi = {10.3133/wsp2234h},
  url = {https://pubs.usgs.gov/publication/wsp2234H},
  note = {Source identifier: wsp2234H}
}