@misc{indiciae02f5469bd02b,
  title = {Reconnaissance geologic map of the Jibal al Misma Quadrangle, sheet 27/40 C, Kingdom of Saudi Arabia},
  author = {E. B. Ekren},
  year = {1984},
  doi = {10.3133/ofr84379},
  url = {https://pubs.usgs.gov/publication/ofr84379},
  note = {Source identifier: ofr84379}
}