TY  - RPRT
TI  - One-level prediction-A numerical method for estimating undiscovered metal endowment
AU  - R.B. McCammon
AU  - J.O. Kork
PY  - 1992
DO  - 10.1007/bf01782267
UR  - https://pubs.usgs.gov/publication/70017253
ID  - 70017253
ER  -