@misc{indiciaed320ee841312,
  title = {Reconnaissance investigations of ancient gold mines in the northwestern part of the Al Aqiq Quadrangle, Kingdom of Saudi Arabia},
  author = {R. G. Worl},
  year = {1982},
  doi = {10.3133/ofr82989},
  url = {https://pubs.usgs.gov/publication/ofr82989},
  note = {Source identifier: ofr82989}
}