TY  - RPRT
TI  - Geology of the western Piedmont in Virginia
AU  - James P. Hibbard
AU  - James S. Beard
AU  - William S. Henika
AU  - J. Wright Horton
PY  - 2016
UR  - https://pubs.usgs.gov/publication/70179665
ID  - 70179665
ER  -