@misc{indiciae93cb2f4b0e80,
  title = {Reconnaissance geology of the Wadi Amq Quadrangle, sheet 18/41 C, Kingdom of Saudi Arabia},
  author = {D.G. Hadley},
  year = {1982},
  doi = {10.3133/ofr82287},
  url = {https://pubs.usgs.gov/publication/ofr82287},
  note = {Source identifier: ofr82287}
}