TY  - BOOK
AU  - Penhallegon,William James
ED  - Tennessee Valley Authority.
TI  - Building sandstones of northern Alabama,
T2  - Alabama. [State geologist] Circular
AV  - TN957 .P4
U1  - 553.53 
PY  - 1940///
CY  - University, Ala.
KW  - Sandstone
KW  - Building stones
KW  - Alabama
N1  - At head of title: Geological Survey of Alabama; "Published in cooperation with the Tennessee Valley Authority."
ER  -