TY  - RPRT
TI  - Comparison of three techniques for the determination of uranium and thorium in rocks
AU  - R. J. Hart
AU  - D.L. Reid
AU  - J. S. Stuckless
AU  - H.J. Welke
PY  - 1980
DO  - 10.1016/0009-2541(80)90030-3
UR  - https://pubs.usgs.gov/publication/70012296
ID  - 70012296
ER  -