@misc{indiciae8a914db8cb5d,
  title = {Geologic section from Carlsbad Caverns National Park through the Project Gnome Site, Eddy and Lea Counties, New Mexico},
  author = {James B. Cooper},
  year = {1960},
  doi = {10.3133/ofr6031},
  url = {https://pubs.usgs.gov/publication/ofr6031},
  note = {Source identifier: ofr6031}
}