TY  - RPRT
TI  - Geologic map database of the Washington DC area featuring data from three 30 x 60 minute quadrangles: Frederick, Washington West, and Fredericksburg
AU  - Adam M. Davis
AU  - C. Scott Southworth
AU  - James E. Reddy
AU  - J. Stephen Schindler
PY  - 2001
DO  - 10.3133/ofr01227
UR  - https://pubs.usgs.gov/publication/ofr01227
ID  - ofr01227
ER  -