TY  - RPRT
TI  - USGS ground-water flow model : an essential tool for managing the water supply of the Virginia Coastal Plain
AU  - Martha L. Erwin
AU  - Randolph E. McFarland
AU  - Bruce T. Scott
PY  - 1999
DO  - 10.3133/fs09999
UR  - https://pubs.usgs.gov/publication/fs09999
ID  - fs09999
ER  -