TY  - RPRT
TI  - U.S. Geological Survey ground-water studies in Virginia
AU  - J. D. Powell
AU  - G. K. Speiran
AU  - G. S. Anderson
PY  - 1988
DO  - 10.3133/ofr88135
UR  - https://pubs.usgs.gov/publication/ofr88135
ID  - ofr88135
ER  -