TY  - BOOK
AU  - Spencer, Edgar W. 
AU  - Bell, J. David 
TI  - Valley and ridge and blue ridge traverse, Central Virginia
T2  - Field Trip Guidebooks Series; v. 157
SN  - 9781118668269
PY  - 1989///
CY  - Washington, D. C.
PB  - American Geophysical Union 
KW  - Blue Ridge TraverseCentral VirginiaRidgeValley
UR  - https://doi.org/10.1029/FT157
ER  -