TY - RPRT TI - Geophysical investigations of the Umm ar Rummf copper prospect, Al Qunfudhah Quadrangle, Kingdom of Saudi Arabia AU - Hamdy S. Sadek AU - H. Richard Blank PY - 1983 DO - 10.3133/ofr83298 UR - https://pubs.usgs.gov/publication/ofr83298 ID - ofr83298 ER -