TY  - RPRT
TI  - Principal sources of ground water in Fairfax County, Virginia
AU  - Richard H. Johnston
AU  - J. D. Larson
PY  - 1979
DO  - 10.3133/ofr79211
UR  - https://pubs.usgs.gov/publication/ofr79211
ID  - ofr79211
ER  -