TY  - RPRT
TI  - Direct radiometric measurement by gamma-ray scintillation Spectrometer: Part II: Uranium, Thorium, and Potassium in Common Rocks
AU  - Patrick M. Hurley
PY  - 1956
DO  - 10.1130/0016-7606(1956)67[405:drmbgs]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70216324
ID  - 70216324
ER  -