@misc{indiciaee1bd8a911991,
  title = {Mercury accumulation in periphyton of eight river ecosystems},
  author = {A.H. Bell and B. C. Scudder},
  year = {2007},
  doi = {10.1111/j.1752-1688.2007.00078.x},
  url = {https://pubs.usgs.gov/publication/70031070},
  note = {Source identifier: 70031070}
}