@misc{indiciae7e5e71a56968,
  title = {The validity of geologic projection, a successful example: the Straight Creek Tunnel pilot bore, Colorado},
  author = {Charles Sherwood Robinson and Fitzhugh T. Lee},
  year = {1965},
  doi = {10.3133/ofr65138},
  url = {https://pubs.usgs.gov/publication/ofr65138},
  note = {Source identifier: ofr65138}
}