@misc{indiciaeae73643c2b54,
  title = {Map showing the distribution of sum of the ranks for concentrations of lead + zinc + copper + silver and lead + zinc in samples of stream sediment from the Wallace 1 degree by 2 degrees Quadrangle, Montana and Idaho},
  author = {D. L. Leach and R.J. Goldfarb},
  year = {1989},
  doi = {10.3133/mf1354d},
  url = {https://pubs.usgs.gov/publication/mf1354D},
  note = {Source identifier: mf1354D}
}