@misc{indiciaedd49f4505f8b,
  title = {Silver distribution in B-horizon soils, Iron River 1° x 2° quadrangle, Michigan and Wisconsin},
  author = {R.T. Hopkins and H. V. Alminas and J. D. Hoffman},
  year = {1984},
  doi = {10.3133/i1360l},
  url = {https://pubs.usgs.gov/publication/i1360L},
  note = {Source identifier: i1360L}
}