@misc{indiciaedc7142eb346c,
  title = {Geography, geology, and mineral resources of the Portneuf quadrangle, Idaho},
  author = {George Rogers Mansfield},
  year = {1929},
  doi = {10.3133/b803},
  url = {https://pubs.usgs.gov/publication/b803},
  note = {Source identifier: b803}
}