TY  - RPRT
TI  - Gross-beta activity in ground water: natural sources and artifacts of sampling and laboratory analysis
AU  - Alan H. Welch
AU  - Zoltan Szabo
AU  - David L. Parkhurst
AU  - Peter C. Van Metre
AU  - Ann H. Mullin
PY  - 1995
DO  - 10.1016/0883-2927(95)00020-8
UR  - https://pubs.usgs.gov/publication/70185382
ID  - 70185382
ER  -