Properties and uses of shales and clays, southwestern Pennsylvania /

Bibliographic Details
Main Author:	O'Neill, Bernard J., 1920-
Other Authors:	Barnes, John Henry, 1946-
Format:	Book
Language:	English
Published:	Harrisburg : Pennsylvania Geological Survey, 1979.
Series:	Mineral resource report ; 77.
Subjects:	Shale > Pennsylvania. Clay > Pennsylvania.

Description
Physical Description:	viii, 689 pages : maps (1 folded in pocket) ; 24 cm.
Bibliography:	Bibliography: pages 681-685.