@misc{indiciae168095768697,
  title = {Ore controls at the Mahd adh Dhahab gold mine, Kingdom of Saudi Arabia},
  author = {Ronald G. Worl},
  year = {1978},
  doi = {10.3133/ofr78778},
  url = {https://pubs.usgs.gov/publication/ofr78778},
  note = {Source identifier: ofr78778}
}