@misc{indiciae0e930390b030,
  title = {Reconnaissance investigations of ancient gold mines in the southern part of the Wadi Bidah District, Jabal Ibrahim and Al Aqiq quadrangles, Kingdom of Saudi Arabia},
  author = {R. G. Worl and C. W. Smith},
  year = {1982},
  doi = {10.3133/ofr82789},
  url = {https://pubs.usgs.gov/publication/ofr82789},
  note = {Source identifier: ofr82789}
}