@misc{indiciaef9ef7d236c3e,
  title = {Geologic map of the west half of the Klamath Falls 1 degree by 2 degrees Quadrangle, south-central Oregon},
  author = {David E. Sherrod and Beth G. Pickthorn},
  year = {1992},
  doi = {10.3133/i2182},
  url = {https://pubs.usgs.gov/publication/i2182},
  note = {Source identifier: i2182}
}