TY  - RPRT
TI  - Preliminary geologic map of Fairfax County, Virginia
AU  - Avery Drake
AU  - A.E. Nelsen
AU  - L.M. Force
AU  - A.J. Froelich
AU  - P. T. Lyttle
PY  - 1979
DO  - 10.3133/ofr79398
UR  - https://pubs.usgs.gov/publication/ofr79398
ID  - ofr79398
ER  -