@misc{indiciaeb891b826c394,
  title = {Geochemical map of the North Fork John Day River Roadless Area, Grant County, Oregon},
  author = {James G. Evans},
  year = {1986},
  doi = {10.3133/mf1581b},
  url = {https://pubs.usgs.gov/publication/mf1581B},
  note = {Source identifier: mf1581B}
}