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Geology of the northeastern Rub al Khali quadrangle, Kingdom of Saudi Arabia
by Richard A. Bramkamp and Leon F. Ramirez ; Department of the Interior, United States Geological Survey.
Relief shown by hachures and spot heights.
"Prepared by the U.S. Geological Survey and the Arabian American Oil Company under the joint sponsorship of the Kingdom of Saudi Arabia and the U.S. Department of State."
Miscellaneous geologic investigations ; map I-214 A