@misc{indiciaeefc727005501,
  title = {Preliminary geologic map of Ellipse III-9-5 and vicinity},
  author = {R.S. Saunders and T.A. Mutch},
  year = {1967},
  doi = {10.3133/ofr68197},
  url = {https://pubs.usgs.gov/publication/ofr68197},
  note = {Source identifier: ofr68197}
}