Illinois State Geological Survey Bulletin No. 13 (Paperback) (ISBN-13: 9781021978196)

In this report, the Illinois State Geological Survey presents the results of its investigation into the geology of a specific region. The report includes detailed maps and descriptions of the area's rock formations, as well as information on mineral resources and hydrology. This book is an essential resource for geologists, engineers, and anyone involved in the study of natural resources.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

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