@misc{indiciaeef4609446e2d,
  title = {Using natural archives to track sources and long-term trends of pollution: some final thoughts and suggestions for future directions},
  author = {Jules M. Blais and Michael R. Rosen and John P. Smol},
  year = {2015},
  doi = {10.1007/978-94-017-9541-8\_17},
  url = {https://pubs.usgs.gov/publication/70145310},
  note = {Source identifier: 70145310}
}