TY  - RPRT
TI  - Preliminary report on the ancestral Potomac River deposits in Fairfax County, Virginia, and their potential hydrogeologic significance
AU  - A.J. Froelich
AU  - Richard H. Johnston
AU  - William H. Langer
PY  - 1978
DO  - 10.3133/ofr78544
UR  - https://pubs.usgs.gov/publication/ofr78544
ID  - ofr78544
ER  -