TY  - RPRT
TI  - Map showing mineral resources of the Culpeper Basin, Virginia and Maryland availability and planning for future needs
AU  - A.J. Froelich
AU  - B. D. Leavy
PY  - 1982
DO  - 10.3133/i1313b
UR  - https://pubs.usgs.gov/publication/i1313B
ID  - i1313B
ER  -