TY  - RPRT
TI  - Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002
AU  - Gregory C. Johnson
AU  - Tammy M. Zimmerman
AU  - Bruce D. Lindsey
AU  - Eliza L. Gross
PY  - 2011
DO  - 10.3133/sir20115115
UR  - https://pubs.usgs.gov/publication/sir20115115
ID  - sir20115115
ER  -