@misc{indiciae463cf3b049f3,
  title = {Mineral reconnaissance in the southern part of the Wadi Azlam quadrangle, Saudi Arabia},
  author = {Robert F. Johnson and Virgil A. Trent},
  year = {1968},
  doi = {10.3133/ofr68150},
  url = {https://pubs.usgs.gov/publication/ofr68150},
  note = {Source identifier: ofr68150}
}