Clay and shale of northwestern Alabama,
Clarke, Otis M.
Clay and shale of northwestern Alabama, by Otis M. Clarke, Jr. - University, Ala., Geological Survey of Alabama, Division of Economic Geology, 1966. - 88 p. illus., maps (part col., 1 fold. in pocket) port. 23 cm. - Geological Survey of Alabama. Circular 20B . - Circular (Geological Survey of Alabama) ; 20B. .
Prepared in cooperation with the Bureau of Mines, U.S. Dept. of the Interior.
Bibliography: p. 33-34.
gs 66000313 //r932
Clay--Alabama.
Shale--Alabama.
TN942 / .C55
553/.61/09761
Clay and shale of northwestern Alabama, by Otis M. Clarke, Jr. - University, Ala., Geological Survey of Alabama, Division of Economic Geology, 1966. - 88 p. illus., maps (part col., 1 fold. in pocket) port. 23 cm. - Geological Survey of Alabama. Circular 20B . - Circular (Geological Survey of Alabama) ; 20B. .
Prepared in cooperation with the Bureau of Mines, U.S. Dept. of the Interior.
Bibliography: p. 33-34.
gs 66000313 //r932
Clay--Alabama.
Shale--Alabama.
TN942 / .C55
553/.61/09761