@misc{indiciae9adfa15cd094,
  title = {Stratigraphic sections of some Triassic and Jurassic rocks from Douglas, Wyoming, to Boulder, Colorado},
  author = {G. N. Pipiringos and Robert Brett O'Sullivan},
  year = {1976},
  doi = {10.3133/oc69},
  url = {https://pubs.usgs.gov/publication/oc69},
  note = {Source identifier: oc69}
}