TY - BOOK AU - Ries,Heinrich TI - The clay deposits of Kentucky: An economic consideration of the pottery, brick, and tile clays, fire clays, and shales of Kentucky, with notes on their industrial development, T2 - Kentucky. Geological survey, 1920- Series 6. [Geologic reports] AV - TN942 .R383 PY - 1922/// CY - Frankfort, Ky. PB - The Kentucky Geological survey KW - Clay KW - Kentucky N1 - Bibliography: p. 234-235 ER -