@misc{indiciaea4a6fa05df70,
  title = {Landsat image map of the Wadi Hali Quadrangle, sheet 18E, Kingdom of Saudi Arabia},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey and Saudi Arabia. Mudīrīyah al-ʻĀmmah lil-Tharwah al-Maʻdinīyah},
  year = {1981},
  doi = {10.3133/ofr81587},
  url = {https://pubs.usgs.gov/publication/ofr81587},
  note = {Source identifier: ofr81587}
}