Lightweight aggregate from Illinois shales.

Bibliographic Details
Main Author:	White, William Arthur
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1960.
Series:	Circular (Illinois State Geological Survey) ; 290.
Subjects:	Shale > Illinois. Set theory.

Description
Physical Description:	29 pages : illustrations, map.
Bibliography:	Bibliography: page 29.