TY  - RPRT
TI  - Gossan evaluation manual for use in the Kingdom of Saudi Arabia
AU  - W. R. Ryall
AU  - G.F. Taylor
AU  - Saudi Arabia. Deputy Ministry for Mineral Resources
AU  - Riofinex Limited
PY  - 1981
UR  - https://pubs.usgs.gov/publication/70157279
ID  - 70157279
ER  -