@misc{indiciae3aedac1e7260,
  title = {Reconnaissance geologic map of the Sangre de Cristo Wilderness Study Area, south-central Colorado},
  author = {Bruce R. Johnson and David A. Lindsey and R.M. Bruce and Sandra J. Soulliere},
  year = {1987},
  doi = {10.3133/mf1635b},
  url = {https://pubs.usgs.gov/publication/mf1635B},
  note = {Source identifier: mf1635B}
}