@misc{indiciaeb4f00b182d12,
  title = {Geochemical soil studies in the Cotter Basin area, Lewis and Clark County, Montana},
  author = {D. J. Grimes and Robert L. Earhart},
  year = {1975},
  doi = {10.3133/ofr7572},
  url = {https://pubs.usgs.gov/publication/ofr7572},
  note = {Source identifier: ofr7572}
}