Petrographic and ceramic properties of Pennsylvanian shales of Illinois /

Bibliographic Details

Main Author:	Grim, Ralph E. (Ralph Early), 1902-
Format:	Book
Language:	English
Published:	Urbana, Illinois, [publisher not identified] ; 1941.
Series:	Report of investigations (Illinois State Geological Survey) ; no. 72.
Subjects:	Shale.