TY  - RPRT
TI  - Map and geotechnical properties of surface materials of the Culpeper basin and vicinity, Virginia and Maryland
AU  - A.J. Froelich
PY  - 1985
DO  - 10.3133/i1313e
UR  - https://pubs.usgs.gov/publication/i1313E
ID  - i1313E
ER  -