@misc{indiciae9481cf0fad50,
  title = {Reconnaissance geology of the Jabal al Hajrah 7.5-minute Quadrangle, Kingdom of Saudi Arabia},
  author = {R. G. Worl},
  year = {1981},
  doi = {10.3133/ofr811218},
  url = {https://pubs.usgs.gov/publication/ofr811218},
  note = {Source identifier: ofr811218}
}