Oil and gas pay maps of Illinois.

Bibliographic Details
Main Author:	Howard, Richard Henry
Format:	Book
Language:	English
Published:	Urbana : Illinois State Geological Survey, 1967.
Series:	Illinois petroleum ; 84.
Subjects:	Petroleum > Illinois > Maps. Natural gas > Illinois > Maps.

Description
Item Description:	Cover title.
Physical Description:	64 pages : illustrations, maps ; 28 cm.