Cover Image

Rock stratigraphy of the Silurian system in northeastern and northwestern Illinois /

Bibliographic Details
Main Author: Willman, H. B. (Harold Bowen), 1901-
Format: Book
Language:English
Published: Urbana : Illinois State Geological Survey, 1973.
Series:Circular (Illinois State Geological Survey) ; 479.
Subjects:
Geology, Stratigraphic > Silurian.
Geology > Illinois.
Description
Item Description:Cover title.
Physical Description:55 pages : illustrations ; 26 cm.
Bibliography:Bibliography: pages 40-44.