TY  - BOOK
AU  - Clarke,Otis M.
ED  - United States.
TI  - Clay and shale of northeastern Alabama,
T2  - Geological Survey of Alabama. Circular 20-C
AV  - QE471 .C569
U1  - 552/.5 
PY  - 1968///
CY  - University, Ala.
KW  - Clay
KW  - Alabama
KW  - Shale
N1  - Prepared in cooperation with U.S. Bureau of Mines; Bibliography: p. 37-39
ER  -