@misc{indiciaef790b4b3d2ba,
  title = {Reconnaissance geologic map of the Ochoco Reservoir quadrangle, Crook County, Oregon},
  author = {A. C. Waters and R.H. Vaughan},
  year = {1968},
  doi = {10.3133/i541},
  url = {https://pubs.usgs.gov/publication/i541},
  note = {Source identifier: i541}
}