Petrology of the Paleozoic shales of Illinois /

Bibliographic Details
Main Author:	Grim, Ralph E. (Ralph Early), 1902-
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1957.
Series:	Report of investigations (Illinois State Geological Survey) ; no. 203.
Subjects:	Shale > Illinois. Geology, Stratigraphic > Paleozoic.

Description
Physical Description:	35 pages : illustrations
Bibliography:	Bibliography: page 28.