TY  - RPRT
TI  - Tritium as an indicator of modern, mixed, and premodern groundwater age
AU  - Bruce D. Lindsey
AU  - Bryant C. Jurgens
AU  - Kenneth Belitz
PY  - 2019
DO  - 10.3133/sir20195090
UR  - https://pubs.usgs.gov/publication/sir20195090
ID  - sir20195090
ER  -