@misc{indiciaedaa3a1fc579a,
  title = {Geographic map of the western Rub Al Khali quadrangle, Kingdom of Saudi Arabia},
  author = {Richard A. Bramkamp and Ruel D. Gierhart and Lloyd D. Owens and Leon F. Ramirez},
  year = {1962},
  doi = {10.3133/i218b},
  url = {https://pubs.usgs.gov/publication/i218B},
  note = {Source identifier: i218B}
}