TY  - RPRT
TI  - Radionuclides as tracers and timers in surface and groundwater
AU  - Robert L. Michel
PY  - 2009
DO  - 10.1016/s1569-4860(09)01605-2
UR  - https://pubs.usgs.gov/publication/70199105
ID  - 70199105
ER  -