TY  - RPRT
TI  - Ground-water supplies in shale and sandstone in Fairfax, Loudoun, and Prince William Counties, Virginia
AU  - Paul McKelvey Johnston
PY  - 1960
DO  - 10.3133/cir424
UR  - https://pubs.usgs.gov/publication/cir424
ID  - cir424
ER  -