@misc{indiciaeb4f11f95b7db,
  title = {Reconnaissance geologic map of the east half of the Bend quadrangle, Crook, Wheeler, Jefferson, Wasco and Deschutes Counties, Oregon},
  author = {D. A. Swanson},
  year = {1969},
  doi = {10.3133/i568},
  url = {https://pubs.usgs.gov/publication/i568},
  note = {Source identifier: i568}
}