TY  - RPRT
TI  - Report on field trip to the Jabal As Sawrah and Wadi Al'Ays areas, northwestern Hijaz quadrangle, Saudi Arabia
AU  - Robert Francis Johnson
AU  - Virgil A. Trent
PY  - 1972
DO  - 10.3133/ofr72197
UR  - https://pubs.usgs.gov/publication/ofr72197
ID  - ofr72197
ER  -