TY  - RPRT
TI  - Preliminary report on Hail-Hulayfah region and progress of reconnaissance mineral survey in northeastern Hijaz quadrangle, Saudi Arabia
AU  - C. L. Hummel
AU  - Hashim Hakim
PY  - 1972
DO  - 10.3133/ofr72178
UR  - https://pubs.usgs.gov/publication/ofr72178
ID  - ofr72178
ER  -