@misc{indiciaee52481b9cd03,
  title = {Reconnaissance geologic map of the Jibal Hibran Quadrangle, sheet 27/40 B, Kingdom of Saudi Arabia},
  author = {E. B. Ekren},
  year = {1984},
  doi = {10.3133/ofr84380},
  url = {https://pubs.usgs.gov/publication/ofr84380},
  note = {Source identifier: ofr84380}
}