@misc{indiciae7490404e51ad,
  title = {Geology of the northwestern Hijaz quadrangle, Kingdom of Saudi Arabia},
  author = {Glen F. Brown and Roy O. Jackson and R.G. Bogue and E.L. Elberg},
  year = {1963},
  doi = {10.3133/i204a},
  url = {https://pubs.usgs.gov/publication/i204A},
  note = {Source identifier: i204A}
}