@misc{indiciaedd231cc2f5f7,
  title = {Preliminary geologic map of Ellipse II-13-2 and vicinity},
  author = {S.R. Titley},
  year = {1967},
  doi = {10.3133/ofr68268},
  url = {https://pubs.usgs.gov/publication/ofr68268},
  note = {Source identifier: ofr68268}
}