Geology of the northeastern Rub al Khali quadrangle, Kingdom of Saudi Arabia /

by Bramkamp, Richard A., 1910-1958
Washington, D.C. : U.S. Geological Survey, 1961

Geology of the eastern Rub al Khali quadrangle, Kingdom of Saudi Arabia /

by Elberg, Edward L.
Washington, D.C. : U.S. Geological Survey, 1963

Geology of the Northern Tuwayq quadrangle, Kingdom of Saudi Arabia /

by Bramkamp, Richard A., 1910-1958
Washington, D.C. : U.S. Geological Survey, 1958