@misc{indiciae91a2637501e3,
  title = {The sediment of the potomac river},
  author = {C.C. Babb},
  year = {1893},
  doi = {10.1126/science.ns-21.542.342},
  url = {https://pubs.usgs.gov/publication/70010937},
  note = {Source identifier: 70010937}
}