@misc{indiciae6b8e5409fa3c,
  title = {Preliminary geologic map of the Greeley 1° x 2° quadrangle, Colorado and Wyoming},
  author = {William A. Braddock and J. C. Cole},
  year = {1978},
  doi = {10.3133/ofr78532},
  url = {https://pubs.usgs.gov/publication/ofr78532},
  note = {Source identifier: ofr78532}
}