TY  - BOOK
AU  - Sohn,I.G.
TI  - Industrial clays other than potential sources of alumina of the Columbia Basin
T2  - Geological Survey circular 158
AV  - QE75 .C5 no. 158
U1  - 553.6 
PY  - 1952///
CY  - Washington
KW  - Clay
KW  - Columbia River Valley
N1  - "References": p. 2-3
ER  -