Greater Pittsburgh region properties and uses of clays and shales /

Bibliographic Details
Main Author:	O'Neill, Bernard J.
Corporate Authors:	Pennsylvania. Bureau of Topographic and Geologic Survey, Geological Survey (U.S.)
Format:	Book
Language:	English
Published:	Harrisburg : The Bureau : may be purchased from State Book Store, 1976.
Series:	Mineral resource report ; 71.
Subjects:	Clay > Pennsylvania > Pittsburgh Metropolitan Area. Shale > Pennsylvania > Pittsburgh Metropolitan Area.

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