@misc{indiciaedd740d763c2d,
  title = {Mineral investigations in the Jabal Radwa quadrangle, northwest Hijaz, Saudi Arabia},
  author = {Robert Francis Johnson and Virgil A. Trent},
  year = {1968},
  doi = {10.3133/ofr68148},
  url = {https://pubs.usgs.gov/publication/ofr68148},
  note = {Source identifier: ofr68148}
}