@misc{indiciae925d94a82378,
  title = {Hamdah ancient gold mines, Kingdom of Saudi Arabia},
  author = {Paul S. Bosch and Eyad Jannadi and A. M. Helaby and P.R. Johnson and A. A. Bookstrom and M.A. Bazzari},
  year = {1990},
  doi = {10.3133/ofr90326},
  url = {https://pubs.usgs.gov/publication/ofr90326},
  note = {Source identifier: ofr90326}
}