TY  - RPRT
TI  - Preliminary estimates of residence times and apparent ages of ground water in the Chesapeake Bay watershed, and water-quality data from a survey of springs
AU  - Michael J. Focazio
AU  - Niel Plummer
AU  - John K. Bohlke
AU  - Eurybiades Busenberg
AU  - L. Joseph Bachman
AU  - David S. Powars
PY  - 1998
DO  - 10.3133/wri974225
UR  - https://pubs.usgs.gov/publication/wri974225
ID  - wri974225
ER  -