@misc{indiciaeaeb6aa2d4e66, title = {Ground-water hydrology and quality in the Valley and Ridge and Blue Ridge physiographic provinces of Clarke County, Virginia}, author = {W. G. Wright}, year = {1990}, doi = {10.3133/wri904134}, url = {https://pubs.usgs.gov/publication/wri904134}, note = {Source identifier: wri904134} }