Geologic map index of Illinois /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	McIntosh, Willard L., Fuller, H. Kit, Eister, Margaret F.
Format:	Government Document Map
Language:	English
Published:	[Reston, Va.] : The Survey, 1987.
Edition:	Revised and updated /
Subjects:	Geology > Illinois > Maps > Indexes. Illinois > Maps > Indexes. Illinois > Maps. Geology. Maps. Illinois. Indexes.

Description
Item Description:	Consists of geographic map to help locate areas of interest, index maps organized by various scale ranges, a bibliography, and an explanation.
Physical Description:	4 maps ; 38 x 22 cm + 1 text (4 pages ; 28 x 44 cm), folded in envelope 30 x 24 cm