@misc{indiciae770d01124a3f,
  title = {Isotopic variations of dissolved copper and zinc in stream waters affected by historical mining},
  author = {David M. Borrok and David Nimick and Richard B. Wanty and William I. Ridley},
  year = {2008},
  doi = {10.1016/j.gca.2007.11.014},
  url = {https://pubs.usgs.gov/publication/70033364},
  note = {Source identifier: 70033364}
}