@misc{indiciaec8c1c1863c6e,
  title = {Geophysical investigations of the Bahran gossan and Shaihab mine, Saudi Arabia},
  author = {W. E. Davis and R. V. Allen},
  year = {1967},
  doi = {10.3133/ofr6780},
  url = {https://pubs.usgs.gov/publication/ofr6780},
  note = {Source identifier: ofr6780}
}