TY  - BOOK
AU  - Ries,Heinrich
AU  - Somers,Ransom Evarts
TI  - The clays and shales of Virginia west of the Blue ridge,
T2  - Virginia.  Geological survey.  Bulletin
AV  - QE173 .A2 no. 20
U1  - 557.55 
PY  - 1920///
CY  - Charlottesville
PB  - University of Virginia
KW  - Clay
KW  - Virginia
KW  - Shale
N1  - At head of title: Virginia Geological survey.  University of Virginia.  Thomas Leonard Watson, director
ER  -