Index map of Illinois showing availabilty of flood-prone area maps.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Format:	Map
Language:	English
Published:	Champaign, Il : Geological Survey, 1975.
Edition:	July 1975.
Subjects:	Floods > Illinois > Maps. Illinois > Maps. Floods. Maps. Index maps.

Description
Physical Description:	1 map on sheet 44 x 28 cm