Industrial clays other than potential sources of alumina of the Columbia Basin.
Sohn, I. G. 1911-2000.
Industrial clays other than potential sources of alumina of the Columbia Basin. - Washington, 1952. - 18 p. 2 fold. col. maps (in pocket) tables. 27 cm. - Geological Survey circular 158. .
"References": p. 2-3.
gs 53000081
Clay--Columbia River Valley.
QE75 / .C5 no. 158
553.6
Industrial clays other than potential sources of alumina of the Columbia Basin. - Washington, 1952. - 18 p. 2 fold. col. maps (in pocket) tables. 27 cm. - Geological Survey circular 158. .
"References": p. 2-3.
gs 53000081
Clay--Columbia River Valley.
QE75 / .C5 no. 158
553.6