TY  - RPRT
TI  - Geologic map of the western Rub Al Khali quadrangle, Kingdom of Saudi Arabia
AU  - Richard A. Bramkamp
AU  - Ruel D. Gierhart
AU  - Lloyd D. Owens
PY  - 1963
DO  - 10.3133/i218a
UR  - https://pubs.usgs.gov/publication/i218A
ID  - i218A
ER  -