TY  - RPRT
TI  - Geologic map of the national parks in the National Capital region, Washington, D.C., Virginia, Maryland, and West Virginia
AU  - Scott Southworth
AU  - Danielle Denenny
PY  - 2006
DO  - 10.3133/ofr20051331
UR  - https://pubs.usgs.gov/publication/ofr20051331
ID  - ofr20051331
ER  -