Igneous intrusive rocks in Illinois and their economic significance /

Bibliographic Details

Main Author:	Clegg, Kenneth Edward
Other Authors:	Bradbury, James C.
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1956.
Series:	Report of investigations (Illinois State Geological Survey) ; no. 197.
Subjects:	Igneous rocks.