TY  - RPRT
TI  - Digital geologic map of Loudoun County, Virginia
AU  - C.S. Southworth
AU  - W.C. Burton
AU  - J.S. Schindler
AU  - A.J. Froelich
AU  - Remo Nardini
AU  - Pete G. Chirico
AU  - J.E. Reddy
PY  - 1999
DO  - 10.3133/ofr99150
UR  - https://pubs.usgs.gov/publication/ofr99150
ID  - ofr99150
ER  -