TY  - RPRT
TI  - Ancient mines in Al Kushaymiyah region, Kingdom of Saudi Arabia
AU  - A. M. Helaby
AU  - F. C. Dodge
PY  - 1975
DO  - 10.3133/ofr7558
UR  - https://pubs.usgs.gov/publication/ofr7558
ID  - ofr7558
ER  -