TY  - RPRT
TI  - Old groundwater in parts of the upper Patapsco aquifer, Atlantic Coastal Plain, Maryland, USA: Evidence from radiocarbon, chlorine-36 and helium-4
AU  - Niel Plummer
AU  - John R. Eggleston
AU  - Jeff P. Raffensperger
AU  - Andrew G. Hunt
AU  - Gerolamo C. Casile
AU  - D. C. Andreasen
PY  - 2012
DO  - 10.1007/s10040-012-0871-1
UR  - https://pubs.usgs.gov/publication/70043333
ID  - 70043333
ER  -