@misc{indiciae8d89e8d425d6,
  title = {Lake eutrophication— A natural process},
  author = {Phillip E. Greeson},
  year = {2007},
  doi = {10.1111/j.1752-1688.1969.tb04920.x},
  url = {https://pubs.usgs.gov/publication/70224595},
  note = {Source identifier: 70224595}
}