TY  - RPRT
TI  - Bedrock map of Fairfax County, Virginia
AU  - Avery A. Drake
AU  - A.J. Froelich
PY  - 1977
DO  - 10.3133/ofr77523
UR  - https://pubs.usgs.gov/publication/ofr77523
ID  - ofr77523
ER  -