Clay and shale resources in southwestern Pennsylvania /

Bibliographic Details
Main Author:	Leighton, Henry, 1884-
Other Authors:	Shaw, J. B. (Joseph Bradfield), 1884-
Format:	Book
Language:	English
Published:	Harrisburg : Department of Internal Affairs, Topographic and Geologic Survey, 1932.
Series:	Mineral resource report ; 17.
Subjects:	Clay > Pennsylvania. Shale. Clay > Testing.

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