TY  - RPRT
TI  - Geologic map of the Vienna quadrangle, Fairfax County, Virginia, and Montgomery County, Maryland
AU  - Avery Ala Drake
AU  - K. Y. Lee
PY  - 1989
DO  - 10.3133/gq1670
UR  - https://pubs.usgs.gov/publication/gq1670
ID  - gq1670
ER  -