TY  - RPRT
TI  - Mineral deposits of the northwestern Hijaz quadrangle, Kingdom of Saudi Arabia
AU  - Robert Francis Johnson
AU  - Virgil A. Trent
PY  - 1972
DO  - 10.3133/ofr72195
UR  - https://pubs.usgs.gov/publication/ofr72195
ID  - ofr72195
ER  -