@misc{indiciae3247df2f85e5,
  title = {Gossan evaluation manual for use in the Kingdom of Saudi Arabia},
  author = {W. R. Ryall and G.F. Taylor and Saudi Arabia. Deputy Ministry for Mineral Resources and Riofinex Limited},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70157279},
  note = {Source identifier: 70157279}
}