@misc{indiciae094134b48a23,
  title = {Reconnaissance geologic map of the Wadi Khulab Quadrangle, sheet 16/43 A, Kingdom of Saudi Arabia},
  author = {Horace Richard Blank and Mark E. Gettings},
  year = {1985},
  doi = {10.3133/ofr85720},
  url = {https://pubs.usgs.gov/publication/ofr85720},
  note = {Source identifier: ofr85720}
}