@misc{indiciaef863e811e07e,
  title = {Distributions of total copper in samples of nonmagnetic heavy-mineral concentrate and of total and partially extractable copper in samples of stream sediment from the Wallace 1 degree x 2 degree Quadrangle, Montana and Idaho},
  author = {D. L. Leach and D.M. Hopkins and J. A. Domenico and H. E. Dawson},
  year = {1983},
  doi = {10.3133/ofr83307},
  url = {https://pubs.usgs.gov/publication/ofr83307},
  note = {Source identifier: ofr83307}
}